[1] : WordNet (r) 2.0

water vapor
     n : water in a vaporous form diffused in the atmosphere but
         below boiling temperature syn: water vapour
see also:
water vapour 

[2] : Moby Thesaurus II by Grady Ward, 1.0

46 moby thesaurus words for "water vapor":
   afterdamp, agua, aqua, blackdamp, breath, chokedamp, cloud, damp,
   drinking water, eau, effluvium, exhalation, fetid air, firedamp,
   flatus, fluid, fume, ground water, hard water, head, heavy water,
   hydrol, hydrometeor, hydrosphere, limewater, malaria, mephitis,
   miasma, mineral water, puff of smoke, rain, rainwater, reek,
   salt water, sea water, smoke, smudge, soft water, spring water,
   steam, vapor, volatile, water, well water, wetting agent,
   wetting-out agent

Ground Water >> G Words
Ground Water, definition of term: Ground Water
ground+water_pag1.html

Hard Water >> H Words
Hard Water, definition of term: Hard Water
hard+water_pag1.html

Heavy Water >> H Words
Heavy Water, definition of term: Heavy Water
heavy+water_pag1.html

Ammonia Water >> A Words
Ammonia Water, definition of term: Ammonia Water
ammonia+water_pag1.html

First Water >> F Words
First Water, definition of term: First Water
first+water_pag1.html

Congress Water >> C Words
Congress Water, definition of term: Congress Water
congress+water_pag1.html

Distilled Water >> D Words
Distilled Water, definition of term: Distilled Water
distilled+water_pag1.html

Feed Water >> F Words
Feed Water, definition of term: Feed Water
feed+water_pag1.html

Florida Water R >> F Words
Florida Water R, definition of term: Florida Water R
florida+water+r_pag1.html