GLOSSARY

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

0 1 2 3 4 5 6 7 8 9 #


WATER LIFT

(_H2O) – A measure of a vacuum_s ability to raise a vertical column of water in a standard test gauge a specific number of inches. To convert water lift to mercury lift (_Hg), divide by 13.4 (i.e., mercury is 13.4 times heavier than water).


WATER MARK

A water stain: a normal condition of velvet fabrics or carpeting in which an irregular shape resembling a water stain is caused by different pile directions; an irregular wavy pattern characteristic of moir_ fabrics.


WATER MIGRATION

The movement of water within a material by capillary action; the spread of water as liquid or vapour to areas not initially impacted.


WATER POLLUTANT

The presence in water of enough harmful or objectionable material to damage water quality.


WATER STAIN

A discoloration caused by water, often forming a dark outline at the edge of the stain; a water-soluble dye used as a stain for wood.


WEEP HOLE

A small opening in a wall, window or skylight through which condensation or water may drain to the exterior; small openings in a retaining wall to permit water to escape and prevent the build-up of pressure behind the wall.


WET BULB

Temperature registered by a thermometer with a moist _sock_ covering the sensing bulb. This reading is always lower than dry bulb temperature; e.g., 80F (32C) dry bulb equals approximately 68F (20C) wet bulb.


WET CLEAN

To apply a cleaning process uses water as the primary solvent; to wash or launder textiles instead of dry cleaning them.


WET FOGGER

A single or tri-jet, electrically powered atomizer that is used in wet fogging deodorants.


WET SMOKE

Airborne combustion products containing a high liquid component usually generated by smouldering, oxygen-starved fires; fire residues which are tacky, penetrating and extremely malodorous.