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112 DICTIONARY OF AVIATION

works for purifying gas or freeing it from sulfur com- pounds, as it comes from the gas-washer or scrubber.

gas-reserve 'gses-zi,zB:zv n. [also spelt ga&reserv] gas kept in reserv, as in a Zeppelin airship.

gas-reservoir 'gaes^eza-voz n. a reservoir or receptacle con- taining gas; the gas-vessel of an airship; a gas-container ; a gas-holder.

gas-tight ,g3es'tait, (assumptivly) 'g3es,tait adj. so tight as to be impermeable to gas.

gas-tube 'gses,tgoub n. a steel tube or hollow cylindrical re- ceptacle in which inflating? or other gas is comprest and transported; a strong, portable, cylindrical gas-holder; a gas-cylinder.

gas-valve 'gses,vaelv n. [also spelt gasivalv] a valv or con- polling device for regulating the escape or flow of gas.

gas-vessel 'gaes,ves9l n. a vessel or receptacle containing gas or intended for that purpose; a gas-container; specifi- cally, the gasbag or gas-reservoir of a balloon.

gas-washer 'gaes/wejaz n. an apparatus used in gas-works for washing gas or freeing it from ammonia before it goes to the gas-purifier; a scrubber.

gas-works 'gses,WB:zks n. an establishment in which il- luminating-gas is made and whence it is distributed thru , pipes to consumers.

gegenschein 'gee-g9n,$am n. the luminous patch en the ecliptic opposit to the sun : also sometimes cald counter* glow.

geosphere 'd3ii-9,sfi:z n, [also spelt geosfere] the atmosfere of the earth as distinguisht from that of other planets.

get-away 'geta/wee n. the act of getting away frem or leav- ing the starting-peint in an airship; the departure or leaving of an airship from a given location or resting-place ; a get-off; a start.

get-off 'get,0:f n. the action of an aeroplane flying-machine or other airship in getting eff, starting, or leaving the ground; a get-away; a start: as, a quick *get-eff.

giddiness 'gidi-nis n. the condition of being giddy or dizzy, as at a height; swimming in the hed; vertigo; dizzi- ness.

giddy 'gidi adj.

1. having a confused sensation of swimming or whirling in the hed with proneness to fall; affected with vertigo; dizzy.

2. causing or apt to produce dizziness or swimming in the hed; rendering giddy or dizzy.

3. whirling or circling round with bewildering rapidity.

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