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Status	Label ▴	Concept definition	Code	Ref type	Reference	Supplemental references
STD 2005/06/07	WADI	The dry bed of an intermittent <RIVER>, often with steep sides or located at the bottom of a <TERRAIN_CHANNEL>; wadi. A wadi is also known as a wash or an arroyo.	1340			[APDS, "wadi", 1]
STD 2005/06/07	WADI_NEXUS	The representation of one or more <WADI>s; wadi nexus.	1341
STD 2005/06/07	WALL	A solid man-made <BARRIER> of generally heavy <MATERIAL> used as an enclosure, <BOUNDARY>, or for protection; wall.	1342	PR	[FACC, Annex A: AL260]
STD 2005/06/07	WALL_LOOPHOLE	A small <APERTURE> in a <WALL> in a defended <STRUCTURE> created for military purposes, typically about 20 centimetres in diameter; wall loophole.	1343
STD 2014/02/14	WALL_STUD	A slender, upright <STRUCTURAL_MEMBER> of wood or metal that is part of a series of such members forming the structural frame of a <WALL>; wall stud.	1472	IR	[VDARCH, "stud"]
STD 2005/06/07	WAREHOUSE	A <BUILDING> in which goods or merchandise are stored; warehouse [AHD, "warehouse", 1].	1344
STD 2005/06/07	WARM_FRONT	An <ATMOSPHERIC_FRONT> between warm and cold <AIR_MASS>s that moves so that the warmer <AIR> replaces the colder <AIR>; warm front.	1345	PR	[WMO182, W0100, "warm front"]
STD 2005/06/07	WASTE_PROCESSING_FACILITY	A <FACILITY> where waste is processed through chemical, physical, biological, or thermal procedures or a combination of those procedures; waste processing facility.	1346	PR	[FACC, Annex A: AB030]
STD 2005/06/07	WATER	A compound of hydrogen and oxygen, chemical formula H₂O; water [SOED, "water", 1.a].	1347
STD 2005/06/07	WATERBODY	A particular, designated body of <WATER> forming a physiographic <OBJECT>; waterbody [SOED, "waterbody"]. EXAMPLES <LAKE>, <OCEAN>, <SEA>, <RIVER>.	1348
STD 2005/06/07	WATERBODY_ACOUSTIC_PROPERTY- _SET	A <WATERBODY_PROPERTY_SET> describing acoustic-related properties.	1349
STD 2005/06/07	WATERBODY_ACOUSTIC_SIGNATURE- _PROPERTY_SET	An <ACOUSTIC_SIGNATURE_PROPERTY_SET> describing a signal source in a <WATERBODY>.	1350
STD 2005/06/07	WATERBODY_ACOUSTIC_TARGET- _STRENGTH_PROPERTY_SET	A <WATERBODY_PROPERTY_SET> describing acoustic target strength properties (for example: the amount of signal excess added to the return energy of an active sonar emission based on the reflective characteristics of an <OBJECT>).	1351
STD 2005/06/07	WATERBODY_BANK	The raised or sloping bank of <LAND> adjacent to a <LAND_WATER_BOUNDARY>; waterbody bank.	1352
STD 2005/06/07	WATERBODY_BASIN	A delimited, principal division of a <WATERBODY>; waterbody basin. EXAMPLE <OCEAN_BASIN>.	1353	IR	[SP35, "basin"]
STD 2005/06/07	WATERBODY_BATHYMETRY- _PROPERTY_SET	A <WATERBODY_PROPERTY_SET> describing the <<DEPTH_OF_WATERBODY_FLOOR>> with respect to a <SURFACE_DATUM>; waterbody bathymetry property set.	1354
STD 2005/06/07	WATERBODY_BIOLOGIC_SOUND- _SOURCE	A sound source of a biological nature in a <WATERBODY>. EXAMPLES <FISH_SCHOOL>, <WHALE_POD>.	1355
STD 2005/06/07	WATERBODY_BOOM	A floating <BARRIER> used to protect a <WATERBODY_REGION> or to create a sheltered <WATERBODY_SURFACE_REGION> for storage purposes; waterbody boom [DFDD, Feature Dictionary: BD123].	1356	PR	[FACC, Annex A: BD123]
STD 2005/06/07	WATERBODY_CURRENT	A large <WATERBODY_REGION> containing a <WATER_CURRENT> that is relatively homogenous with respect to <<WATERBODY_TEMPERATURE>> or <<PRACTICAL_SALINITY>> and that differs from that of the adjacent <REGION>s; waterbody current.	1357	IR	[S32, "current"]
STD 2005/06/07	WATERBODY_EDDY	An <EDDY> in a <WATERBODY>.	1358	IR	[FACC, Annex A: BD040]
STD 2005/06/07	WATERBODY_FLOOR	The floor of a <WATERBODY>.	1359
STD 2005/06/07	WATERBODY_FLOOR_CANYON	A deep, steep-sided <TERRAIN_CHANNEL> in a <WATERBODY_FLOOR> the bottom of which grades continuously downward; waterbody floor canyon.	1360	PR	[S32, "canyon: submarine"]
STD 2005/06/07	WATERBODY_FLOOR_PINNACLE	A <WATERBODY_FLOOR_TOPOGRAPHIC_CONFIGURATION> of reduced depth at its centre; waterbody floor pinnacle. It is generally round in shape as viewed from above.	1361	IR	[S32, "pinnacle"]
STD 2005/06/07	WATERBODY_FLOOR_PROVINCE	A <WATERBODY_FLOOR_REGION> identifiable by shared physiographic characteristics that are markedly in contrast with those in the adjacent <WATERBODY_FLOOR_REGION>s; waterbody floor province.	1362	PR	[SUFN, "province"]
STD 2005/06/07	WATERBODY_FLOOR_REGION	A <REGION> of a <WATERBODY_FLOOR>.	1363
STD 2005/06/07	WATERBODY_FLOOR_RIDGE	A <RIDGE> with steep sides and either irregular or smooth topography in a <WATERBODY_FLOOR>; waterbody floor ridge. A waterbody floor ridge in an <OCEAN> often separates <OCEAN_BASIN>s.	1364	IR	[S32, "oceanic ridge"]	[S32, "ridge", a/b], [SP35, "ridge"], [SUFN, "RIDGE"]
STD 2005/06/07	WATERBODY_FLOOR_SONAR- _RETURN	A detectable active sonar return signal, from an <OBJECT> on a <WATERBODY_FLOOR>.	1365	IR	[FACC, Annex A: BE029]
STD 2005/06/07	WATERBODY_FLOOR_TOPOGRAPHIC- _CONFIGURATION	A significant configuration of the topography of a <WATERBODY_FLOOR>; waterbody floor topographic configuration.	1366	PR	[FACC, Annex A: BF011]
STD 2005/06/07	WATERBODY_FLOOR_TRENCH	A significant long, narrow, and characteristically very deep and asymmetrical <TERRAIN_CHANNEL> in a <WATERBODY_FLOOR>, with relatively steep sides; waterbody floor trench.	1367	PR	[S57A, Attribute: CATSEA:6]
STD 2005/06/07	WATERBODY_PARTITION	A solid <MAN_MADE_OBJECT> subdividing a <WATERBODY>; waterbody partition [DFDD, Feature Dictionary: FC035]. EXAMPLES An artificial earthen <EMBANKMENT> subdividing a pond or rice paddy.	1368	IR	[FACC, Annex A: FC035]
STD 2005/06/07	WATERBODY_PROPERTY_SET	A <PROPERTY_SET> describing a <LOCATION> or <REGION> of a <WATERBODY>.	1369
STD 2005/06/07	WATERBODY_REGION	A <REGION> of a <WATERBODY>.	1370
STD 2005/06/07	WATERBODY_ROUTE	A <TRANSPORTATION_ROUTE> on a <WATERBODY> established for the safe passage of <VESSEL>s; waterbody route.	709	IR	[FACC, Annex A: FC165]
STD 2005/06/07	WATERBODY_ROUTE_NEXUS	A representation of one or more <WATERBODY_ROUTE>s; waterbody route nexus.	710
STD 2005/06/07	WATERBODY_SHELTER_BASIN	A sheltered <WATERBODY> available for port operations and connecting with another <WATERBODY> (for example: an outer <MARINE_PORT> and/or a <SEA>) sometimes by means of a <HYDROGRAPHIC_LOCK> or passage; waterbody shelter basin.	1371	PR	[S32, "basin" (sheltered)]
STD 2005/06/07	WATERBODY_SHIPPING_PROPERTY- _SET	A <WATERBODY_PROPERTY_SET> describing shipping-related properties.	1372
STD 2005/06/07	WATERBODY_SURFACE	The <SURFACE> of a <WATERBODY>.	1373
STD 2005/06/07	WATERBODY_SURFACE_REGION	A <REGION> of a <WATERBODY_SURFACE>.	1374
STD 2005/06/07	WATERBODY_SURFACE_SLICK	A <WATERBODY_SURFACE_REGION> that is variable in size and markedly different in appearance (for example: in colour and/or oiliness) from adjacent <WATERBODY_SURFACE_REGION>s; waterbody surface slick.	1375	IR	[SP35, "sea slick"]
STD 2005/06/07	WATERBODY_TEMPERATURE- _PROPERTY_SET	A <WATERBODY_PROPERTY_SET> describing properties related to <<TEMPERATURE>>.	1376
STD 2005/06/07	WATERCOURSE	An artificial or natural channel for the conveyance of <WATER>; watercourse.	1393	PR	[S32, "watercourse"]
STD 2005/06/07	WATERFALL	A vertical or nearly vertical descent of a <WATERCOURSE>; waterfall.	1394	IR	[S57A, Object: WATFAL]
STD 2005/06/07	WATERING_HOLE	A small natural <TERRAIN_DEPRESSION> in which <WATER> collects, especially a pool where <NON_HUMAN_ANIMAL>s come to drink; watering hole [AHD, "watering hole", 1].	1395	IR	[FACC, Annex A: BB250]
STD 2005/06/07	WATERING_PLACE	A <REGION> where supplies of <WATER> can be replenished; watering place. EXAMPLES <SPRING>, <WELL> of <WATER>, <WATERING_HOLE>.	1396	IR	[FACC, Annex A: BH170]
STD 2005/06/07	WATER_CHANNEL	That part of a <WATERBODY>, sometimes dredged, that is deep enough for navigation through a <WATERBODY_REGION> that would otherwise not be navigable; water channel. It is usually marked by a single or double line of <MARINE_AID_TO_NAVIGATION>s.	1377	PR	[S32, "channel"]
STD 2005/06/07	WATER_CHANNEL_EDGE	The <BOUNDARY> delimiting the edge of a <WATER_CHANNEL> plus associated <NAVIGATION_MARK_AFLOAT>s and/or <NAVIGATION_MARK_FIXED>s; water channel edge.	1378	IR	[FACC, Annex A: BB007]
STD 2005/06/07	WATER_CURRENT	A <CURRENT> in a <WATERBODY>.	1379	IR	[S57A, Object: CURENT]
STD 2005/06/07	WATER_CURRENT_PROPERTY- _SET	A <PROPERTY_SET> describing the mean <<WATER_CURRENT_SPEED>> within a <REGION> of a <WATERBODY> as a function of time.	1380	IR	[FACC, Annex A: BG040]
STD 2005/06/07	WATER_DATA_COLLECTION- _DEVICE	A <DEVICE> used for the collection of hydrographic and oceanographic data; water data collection device.	1381	PR	[FACC, Annex A: BK030]
STD 2005/06/07	WATER_DRIVEN_GRISTMILL	A <STRUCTURE> equipped with water-driven <EQUIPMENT> for grinding grain into flour or meal; water driven gristmill.	1382	IR	[FACC, Annex B, BFC:22]
STD 2005/06/07	WATER_GATE	A <BARRIER> that may be swung, drawn, or lowered to block an entrance or passageway on a <WATERBODY> (e.g., on a <WATERCOURSE>); water gate [DFDD, Feature Dictionary: BI041].	688	PR	[FACC, Annex A: BI041]
STD 2005/06/07	WATER_GATHERING_REGION	A protected (restricted use) <TERRAIN_SURFACE_REGION> incorporating facilities for the collection of <WATER>, so designated in order to protect the <WATER> on and beneath the <TERRAIN> from being contaminated; water gathering region.	1383	PR	[FACC, Annex A: FA082]
STD 2005/06/07	WATER_INTAKE	A place where <WATER> is taken into a channel or <PIPE> from a <WATERBODY>; water intake [DFDD, Feature Dictionary: BH011]. The purpose of a water intake may be to supply an <AQUEDUCT> or <WATER_TREATMENT_FACILITY>.	1384	PR	[FACC, Annex A: BH011]
STD 2005/06/07	WATER_INTAKE_TOWER	A <TOWER> associated with a <WATER_INTAKE>; water intake tower.	1385	IR	[FACC, Annex A: BI050]
STD 2014/02/14	WATER_MAIN	A main <PIPE> or conduit forming a <COMPONENT> of a public or community <SYSTEM> of <PIPE>s and <VALVE>s conveying non-waste liquid <WATER> to all service connections.	1479	IR	[VDARCH, "water main"]
STD 2005/06/07	WATER_SURFACE_VESSEL	A <VESSEL> capable of operation only on a <WATERBODY_SURFACE>; water surface vessel. EXAMPLES Barge, boat, ship.	1386
STD 2005/06/07	WATER_TOWER	A <TOWER> supporting an elevated <STORAGE_TANK> of <WATER>; water tower.	1387	PR	[FACC, Annex A: AM080]
STD 2005/06/07	WATER_TRAFFIC_SEPARATION- _SCHEME	A measure for organizing a <TRANSPORTATION_ROUTE> that separates opposing streams of <VESSEL>s by appropriate means, including the establishment of <ROUTE_LANE>s; water traffic separation scheme.	1264	IR	[S32, "traffic separation scheme"]
STD 2005/06/07	WATER_TREATMENT_BED	A <TRACT> for the treatment of <WATER> that consists of a bed of <MATERIAL> where <WATER> is aerated or filtered; water treatment bed.	1388	IR	[FACC, Annex A: BH040]
STD 2005/06/07	WATER_TREATMENT_FACILITY	A <FACILITY> including one or more <WATER_TREATMENT_STRUCTURE>s; water treatment facility.	1389
STD 2005/06/07	WATER_TREATMENT_STRUCTURE	A <STRUCTURE> containing layers of <MATERIAL> used to filter or aerate <WATER>; water treatment structure.	1390	IR	[FACC, Annex B, BFC:84]
STD 2005/06/07	WATER_TURBULENCE	A disturbance of <WATER> caused by the interaction of any combination of <WATER_WAVE>s, <WATER_CURRENT>s, <EDDY>s, tidal streams, <WIND>, <SHOAL>s, and obstructions; water turbulence.	1391	PR	[FACC, Annex A: BG012]
STD 2005/06/07	WATER_WAVE	One of a succession of undulations that travel over a <WATERBODY_SURFACE>; water wave [SOED, "wave", I.1.a].	1392	IR	[FACC, Annex A: BG012]
STD 2005/06/07	WAYPOINT	A <LOCATION> used to define a <ROUTE>; waypoint.	1397	IR	[IAN11]
STD 2005/06/07	WEAPON	<EQUIPMENT> intended to inflict bodily harm, especially one used in warfare to overcome an enemy and/or repel a hostile attack; weapon [SOED, "weapon", 1a].	1398
STD 2005/06/07	WEAPONS_RANGE	A <FACILITY> designated for the purpose of discharging firearms or detonating <MUNITION>s; weapons range. A weapons range is also known as a firing range or gunnery range.	1404	IR	[FACC, Annex A: FA015]
STD 2005/06/07	WEAPON_FIGHTING_POSITION	A <FIGHTING_POSITION> designed to accommodate an individual <WEAPON>, which may be mounted on a <VEHICLE>.	1400
STD 2005/06/07	WEAPON_FIGHTING_POS- _ACCESS_ROUTE	The concealed access <RAMP> or <LAND_TRANSPORTATION_ROUTE> leading from the exterior of a <WEAPON_FIGHTING_POSITION> to the <WEAPON_FULL_DEFILADE_POSITION> and then to the <WEAPON_HULL_DEFILADE_POSITION>; weapon fighting position access route.	1399
STD 2005/06/07	WEAPON_FULL_DEFILADE- _POSITION	The <REGION> within a <WEAPON_FIGHTING_POSITION> in which the entire <WEAPON> is hidden from enemy view and fire; weapon full defilade position.	1401
STD 2005/06/07	WEAPON_HULL_DEFILADE- _POSITION	The <REGION> within a <WEAPON_FIGHTING_POSITION> in which only the fighting <COMPONENT> of the <WEAPON> is exposed to enemy fire or view; weapon hull defilade position.	1402
STD 2005/06/07	WEAPON_SYSTEM	A <WEAPON> together with all the <EQUIPMENT> (for example: detection and control apparatus, a launcher, and/or a delivery <VEHICLE>) required to make use of it; weapon system [SOED, "weapon system"].	1403
STD 2014/02/14	WEAPON_TURRET_DEFILADE- _POSITION	The <REGION> within a <WEAPON_FIGHTING_POSITION> in which the hull and fighting <COMPONENT>s of the <WEAPON> are hidden from enemy view and fire; weapon turret defilade position.	1444
STD 2005/06/07	WEATHER_STATION	An <OBSERVATION_STATION> where meteorological data are gathered, recorded, and released; weather station.	1405	IR	[GMET, "weather station"]
STD 2005/06/07	WELL	An <EXCAVATION> drilled and/or dug into the <TERRAIN> for the extraction of liquids and/or gases; well [DFDD, Feature Dictionary: AC040].	1406	IR	[FACC, Annex A: AA050]	[SOED, "well", n1.5.b]
STD 2005/06/07	WELL_HEAD	<EQUIPMENT> (for example: casing heads, lowermost and intermediate tubing heads, Christmas tree equipment with valves and fittings, and/or casing and tubing hangers) used on the <TERRAIN> to maintain control of an oil <WELL>; well-head.	1407	IR	[GOFP, "wellhead"]
STD 2005/06/07	WETLAND	A <TERRAIN_SURFACE_REGION> that is inundated or saturated by surface or ground <WATER> at a frequency and duration sufficient to support, and that under normal circumstances does support, a prevalence of <VEGETATION> typically adapted for life in conditions of saturated <SOIL>; wetland [CFR230, "wetlands"]. EXAMPLES <SWAMP>, <MARSH>, <BOG>.	1409
STD 2005/06/07	WET_DOCK	A <DOCK> in which <WATER> can be maintained at any level by closing a <WATER_GATE> when the <WATER> is at the desired level; wet dock.	1408	PR	[S32, "dock: wet"]
STD 2005/06/07	WHALE	A large, marine <MAMMAL> of the order Cetacea, the members of which have forelimbs as fins, a tail with horizontal flukes, and nasal openings on top of the head; whale [SOED, "whale", 1].	1410
STD 2005/06/07	WHALE_POD	A <POD> of <WHALE>s.	1411
STD 2005/06/07	WHARF	A <STRUCTURE> serving as a berthing place for <VESSEL>s; wharf.	1412	PR	[S32, "wharf"]
STD 2005/06/07	WIND	A <CURRENT> of <AIR> moving relative to a <PLANETARY_SURFACE>; wind. Unless otherwise specified, usually only the horizontal component is considered.	1413	PR	[WMO182, W0930, "wind"]
STD 2005/06/07	WINDMILL	A <SYSTEM> of vanes attached to a <TOWER> and driven by <WIND> (excluding <WIND_MOTOR>s); windmill.	1420	IR	[FACC, Annex A: AJ050]
STD 2005/06/07	WINDOW	An <APERTURE> in a <WALL> or the side of a <BUILDING>, <VEHICLE>, or other <STRUCTURE> that admits light, <AIR>, or both and affords a view of what is outside or inside; window [SOED, "window", 1.a].	1421
STD 2005/06/07	WIND_INDICATOR	A <WIND>-actuated <DEVICE> indicating visually <<WIND_DIRECTION>> and/or <<WIND_SPEED>> information for the surface <WIND>; wind indicator [DFDD, Feature Dictionary: GB080].	1414	IR	[FACC, Annex A: GB080]
STD 2005/06/07	WIND_MOTOR	<EQUIPMENT> attached to a <TOWER> that generates electrical power from <WIND>; wind motor.	1415	IR	[FACC, Annex A: AJ051]
STD 2005/06/07	WIND_ROSE_PROPERTY_SET	A <PROPERTY_SET> describing the relative frequency of the <<WIND_DIRECTION>>, and sometimes the frequencies of the <<WIND_SPEED>>s for different directions, experienced at a given <LOCATION> over a defined period of record; wind rose property set.	1416	PR	[WMO182, W1120, "wind rose"]
STD 2005/06/07	WIND_TUNNEL	<EQUIPMENT> through which <AIR> is forced at controlled velocities in order to study the effects of aerodynamic flow around airfoils, scale models, or other <OBJECT>s; wind tunnel [AHD, "wind tunnel"].	1417
STD 2005/06/07	WIND_VANE	A visual <DEVICE> used to indicate or measure <<WIND_DIRECTION>>; wind vane.	1418	PR	[WMO182, W1240, "wind vane"]
STD 2005/06/07	WIND_WAVE	A <WATER_WAVE> generated by friction between the <WIND> and a <WATERBODY_SURFACE>.	1419	IR	[BOWD, "GLOSSARY OF MARINE NAVIGATION", "wind wave"]
STD 2005/06/07	WIRE	Metal wrought into the form of a slender rod or thread; wire [SOED, "wire", 1].	1422
STD 2005/06/07	WIRE_OBSTACLE	A <TERRAIN_OBSTACLE> constructed of <WIRE>, usually containing barbs or razors; wire obstacle.	1423
STD 2005/06/07	WOODY_GRASSLAND	A <TRACT> covered by woody and/or tree-like grasses of the tropical or temperate <REGION>s that have jointed hollow stems with solid nodes (for example: <BAMBOO> and/or sugar cane); woody grassland.	1424	IR	[FACC, Annex A: EC010]
STD 2005/06/07	WORSHIP_PLACE	A place where religious worship is performed, especially a <BUILDING> designed for this purpose; worship place [SOED, "place of worship"]. EXAMPLES <CHAPEL>, <CHURCH>, <MOSQUE>, <SYNAGOGUE>.	1425
STD 2005/06/07	WRECKING_YARD	An enclosed <TRACT> within which <EQUIPMENT> is dismantled or torn down; wrecking yard.	1426	IR	[FACC, Annex A: AB010]

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