Table 5.27 — ECs with labels beginning with W
Label Concept definition Figure(s) Code
WADI The dry bed of an intermittent <RIVER>, often with steep sides or located at the bottom of a <TERRAIN_CHANNEL>; wadi.   1340
WADI_NEXUS The representation of one or more <WADI>s; wadi nexus.   1341
WALL A solid man-made <BARRIER> of generally heavy <MATERIAL> used as an enclosure, <BOUNDARY>, or for protection; a wall.   1342
WALL_LOOPHOLE A small <APERTURE> in a <WALL> in a defended <STRUCTURE> created for military purposes, typically about 20 centimetres in diameter; a wall loophole.   1343
WAREHOUSE A <BUILDING> in which goods or merchandise are stored; a warehouse [AHD, "warehouse", 1].   1344
WARM_FRONT An <ATMOSPHERIC_FRONT> between warm and cold <AIR_MASS>s that moves so that the warmer <AIR> replaces the colder <AIR>; a warm front.   1345
WASTE_PROCESSING_FACILITY A <FACILITY> where waste is processed through chemical, physical, biological, or thermal procedures or a combination of those procedures; a waste processing facility.   1346
WATER A compound of hydrogen and oxygen, chemical formula H2O; water [SOED, "water", 1.a].   1347
WATER_CHANNEL That part of a <WATERBODY>, sometimes dredged, that is deep enough for navigation through a <WATERBODY_SURFACE_REGION> that would otherwise not be navigable; a water channel. It is usually marked by a single or double line of <MARINE_AID_TO_NAVIGATION>s.   1377
WATER_CHANNEL_EDGE The <BOUNDARY> delimiting the edge of a <WATER_CHANNEL> plus associated <NAVIGATION_MARK_AFLOAT>s and/or <NAVIGATION_MARK_FIXED>s; a water channel edge.   1378
WATER_CURRENT A <CURRENT> in a <WATERBODY>.   1379
WATER_CURRENT_PROPERTY_SET A <PROPERTY_SET> describing the average <<WATER_CURRENT_SPEED>> within a <REGION> of a <WATERBODY> as a function of time.   1380
WATER_DATA_COLLECTION_DEVICE A <DEVICE> used for the collection of hydrographic and oceanographic data; water data collection device.   1381
WATER_DRIVEN_GRISTMILL A <STRUCTURE> equipped with water-driven <EQUIPMENT> for grinding grain into flour or meal; a water driven gristmill.   1382
WATER_GATE A <BARRIER> that may be swung, drawn, or lowered to block an entrance or <WATERBODY_ROUTE> on a <WATERBODY>; water gate.   688
WATER_GATHERING_REGION A protected (restricted use) <TERRAIN_SURFACE_REGION> incorporating <FACILITY>s for the collection of <WATER>, so designated in order to protect the <WATER> on and beneath the <TERRAIN> from being contaminated; a water gathering region.   1383
WATER_INTAKE A <SITE> where <WATER> is taken into a channel or <PIPE> from a <WATERBODY>, generally to supply an <AQUEDUCT> or <WATER_TREATMENT_FACILITY>; a water intake.   1384
WATER_INTAKE_TOWER A <TOWER> associated with a <WATER_INTAKE>; a water intake tower.   1385
WATER_SURFACE_VESSEL A <VESSEL> capable of operation only on a <WATERBODY_SURFACE>; a water surface vessel.
EXAMPLES     Barge, boat, ship.
  1386
WATER_TOWER A <TOWER> supporting an elevated <STORAGE_TANK> of <WATER>; a water tower.   1387
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
WATER_TREATMENT_BED A <TRACT> for the treatment of <WATER> that consists of a bed of <MATERIAL> where <WATER> is aerated or filtered; a water treatment bed.   1388
WATER_TREATMENT_FACILITY A <FACILITY> including one or more <WATER_TREATMENT_STRUCTURE>s; a water treatment facility.   1389
WATER_TREATMENT_STRUCTURE A <STRUCTURE> containing layers of <MATERIAL> used to filter or aerate <WATER>; a water treatment structure.   1390
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
WATER_WAVE One of a succession of undulations that travel over a <WATERBODY_SURFACE>; a water wave [SOED, "wave", I.1.a].   1392
WATERBODY A particular, designated body of <WATER> forming a physiographic <OBJECT> [SOED, "waterbody"].
EXAMPLES     <LAKE>, <OCEAN>, <SEA>, <RIVER>.
  1348
WATERBODY_ACOUSTIC_PROPERTY-
_SET
A <WATERBODY_PROPERTY_SET> describing acoustic-related properties.   1349
WATERBODY_ACOUSTIC_SIGNATURE-
_PROPERTY_SET
An <ACOUSTIC_SIGNATURE_PROPERTY_SET> describing a signal source in a <WATERBODY>.   1350
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
WATERBODY_BANK The raised or sloping bank of <LAND> adjacent to a <LAND_WATER_BOUNDARY>; a waterbody bank.   1352
WATERBODY_BASIN A delimited, principal division of a <WATERBODY>; a waterbody basin.
EXAMPLE     <OCEAN_BASIN>.
  1353
WATERBODY_BATHYMETRY-
_PROPERTY_SET
A <WATERBODY_PROPERTY_SET> describing the <<DEPTH_OF_WATERBODY_FLOOR>> with respect to a <SURFACE_DATUM>; a waterbody bathymetry property set.   1354
WATERBODY_BIOLOGIC_SOUND-
_SOURCE
A sound source of a biological nature in a <WATERBODY>.
EXAMPLES     <FISH_SCHOOL>, <WHALE_POD>.
  1355
WATERBODY_BOOM A floating <BARRIER> used to protect a <RIVER> or the mouth of a <HARBOUR> or to create a sheltered <WATERBODY_REGION> for storage purposes; a waterbody boom.   1356
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; a waterbody current.   1357
WATERBODY_EDDY An <EDDY> in a <WATERBODY>.   1358
WATERBODY_FLOOR The floor of a <WATERBODY>.   1359
WATERBODY_FLOOR_CANYON A deep, step-sided <TERRAIN_CHANNEL> in a <WATERBODY_FLOOR> the bottom of which grades continuously downward; a waterbody floor canyon.   1360
WATERBODY_FLOOR_PINNACLE A <WATERBODY_FLOOR_TOPOGRAPHIC_CONFIGURATION> of reduced depth at its centre; a waterbody floor pinnacle. It is generally round in shape as viewed from above.   1361
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; a waterbody floor province.   1362
WATERBODY_FLOOR_REGION A <REGION> of a <WATERBODY_FLOOR>.   1363
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
WATERBODY_FLOOR_SONAR_RETURN A detectable active sonar return signal, from an <OBJECT> on a <WATERBODY_FLOOR>.   1365
WATERBODY_FLOOR_TOPOGRAPHIC-
_CONFIGURATION
A significant configuration of the topography of a <WATERBODY_FLOOR>; a waterbody floor topographic configuration.   1366
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
WATERBODY_PARTITION A <STRUCTURE> separating portions of a <WATERBODY>; waterbody partition.   1368
WATERBODY_PROPERTY_SET A <PROPERTY_SET> describing a <LOCATION> or <REGION> of a <WATERBODY>.   1369
WATERBODY_REGION A <REGION> of a <WATERBODY>.   1370
WATERBODY_ROUTE A <TRANSPORTATION_ROUTE> on a <WATERBODY> established for the safe passage of <VESSEL>s; waterbody route.   709
WATERBODY_ROUTE_NEXUS A representation of one or more <WATERBODY_ROUTE>s; waterbody route nexus.   710
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; a waterbody shelter basin.   1371
WATERBODY_SHIPPING_PROPERTY-
_SET
A <WATERBODY_PROPERTY_SET> describing shipping-related properties.   1372
WATERBODY_SURFACE The <SURFACE> of a <WATERBODY>.   1373
WATERBODY_SURFACE_REGION A <REGION> of a <WATERBODY_SURFACE>.   1374
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
WATERBODY_TEMPERATURE-
_PROPERTY_SET
A <WATERBODY_PROPERTY_SET> describing properties related to <<TEMPERATURE>>.   1376
WATERCOURSE An artificial or natural channel for the conveyance of <WATER>; a watercourse.   1393
WATERFALL A vertical or nearly vertical descent of a <WATERCOURSE>; a waterfall.   1394
WATERING_HOLE A small natural <TERRAIN_DEPRESSION> in which <WATER> collects, especially a pool where <NON_HUMAN_ANIMAL>s come to drink; a watering hole [AHD, "watering hole", 1].   1395
WATERING_PLACE A <REGION> where supplies of <WATER> can be replenished; a watering place.
EXAMPLES     <SPRING>, <WELL> of <WATER>, <WATERING_HOLE>.
  1396
WAYPOINT A <LOCATION> used to define a <ROUTE>; a waypoint.   1397
WEAPON <EQUIPMENT> intended to inflict bodily harm, especially one used in warfare to overcome an enemy and/or repel a hostile attack; a weapon [SOED, "weapon", 1a].   1398
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>; a weapon fighting position access route.   1399
WEAPON_FIGHTING_POSITION A <FIGHTING_POSITION> designed to accommodate an individual <WEAPON>, which may be mounted on a <VEHICLE>.   1400
WEAPON_FULL_DEFILADE_POSITION The <REGION> within a <WEAPON_FIGHTING_POSITION> in which the entire <WEAPON> is hidden from enemy view and fire; a weapon full defilade position.   1401
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; a weapon hull defilade position.   1402
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; a weapon system [SOED, "weapon system"].   1403
WEAPONS_RANGE A <FACILITY> designated for the purpose of discharging firearms or detonating <MUNITION>s; weapons range.   1404
WEATHER_STATION An <OBSERVATION_STATION> where meteorological data are gathered, recorded, and released; a weather station.   1405
WELL An <EXCAVATION> drilled and/or dug into the <TERRAIN> for the extraction of liquids or gases; well.   1406
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>; a well-head.   1407
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
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
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; a whale [SOED, "whale", 1].   1410
WHALE_POD A <POD> of <WHALE>s.   1411
WHARF A <STRUCTURE> serving as a berthing place for <VESSEL>s; a wharf.   1412
WIND A <CURRENT> of <AIR> moving relative to a <PLANETARY_SURFACE>; wind. Unless otherwise specified, usually only the horizontal component is considered.   1413
WIND_INDICATOR A visual <DEVICE> used to provide <<WIND_DIRECTION>> and <<WIND_SPEED>> information; a wind indicator.   1414
WIND_MOTOR <EQUIPMENT> attached to a <TOWER> that generates electrical power from <WIND>; a wind motor.   1415
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
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; a wind tunnel [AHD, "wind tunnel"].   1417
WIND_VANE A visual <DEVICE> used to indicate or measure <<WIND_DIRECTION>>; a wind vane.   1418
WIND_WAVE A <WATER_WAVE> generated by friction between the <WIND> and a <WATERBODY_SURFACE>.   1419
WINDMILL A <SYSTEM> of vanes attached to a <TOWER> and driven by <WIND> (excluding <WIND_MOTOR>s); a windmill.   1420
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; a window [SOED, "window", 1.a].   1421
WIRE Metal wrought into the form of a slender rod or thread; wire [SOED, "wire", 1].   1422
WIRE_OBSTACLE A <TERRAIN_OBSTACLE> constructed of <WIRE>, usually containing barbs or razors; a wire obstacle.   1423
WOODY_GRASS_LAND 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 grass land.   1424
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
WRECKING_YARD An enclosed <TRACT> within which <EQUIPMENT> is dismantled or torn down; a wrecking yard.   1426