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DICTIONARY OF AVIATION 91

evaporometer i/vaepa'zemi-taz n. an instrument for mes- uring the quantity of liquid, as water, evaporated in a given time; an autemeter.

exhaust-muffler ,eg'z.c:st,mAfiL3z n. the muffler en the exhaust of an mternakcombustion engin; a muffler; a silencer.

expanding-power / ek r spaendin / pau-9^ n. power to cause ex- pansion.

expanse ,ek'spsens n. the expanse, extent, or stretch of the outspred wings of an insect or bird; the distance or mes- urement from tip to tip of the outstgetcht wings; stjetch of wing; expanse of wing; extent of wing; alar extent; alar expanse; wmg^spred (sense i).

exploring-balloon ,ek / spto:-^in-b9 / loun n. a small balloon to luhich recerdmg^mstjuments are attacht, used for ex- ploring the atmosfere; a registation?balloon.

exploring-gun ,ek'spLo:-zirj,gAn n. a proposed gun or small cannon, as at the nose of an airship, to be used for ex- ploring the atmosfere by means of explosiv shells, etc.

extensor ,ek'stens9z n. a muscle which servs to extend, straighten out, or unfold any part or member, as a wing: the epposit of flexor.

extent ,ek'stent n. the extent, expanse, or stretch of the outspred wings of a bird or insect; the tip^to^tip mesure- ment of the wings; extent of wing; expanse of wing; stretch of wing; alar extent; alar expanse; wingzspred (sense i).

eye ai n.

1. opposed aspect or course; confronting presentation or direction: as, to sail in or into the wind's *eye; to steer a ship in the sun's *eye.

2. something suggesting an animal or human eye in shape, position, or the like.

eye of a storm, see under storm, eye of the wind, se under wind.

eye-spot 'ai,spet n. an eye^like spet, as in the wing of a butterfly, in the wing of an argus?fesant, or in the tail of a peaceck; an ocellus.

eyrie 'e:-zi, 'ir-zri, 7 ai-zi n. same meaning as aery. eyry 'e:-zi, 'i:-zi, 'ai-zi . same meaning as aery.

��face fees n. that side of a kite which is usually seen from the ground when the kite is aloft, and which is toward the direction from which the wind is blowing; the front.

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