From The Collaborative International Dictionary of English v.0.44 [gcide]:
Aneroid \An"e*roid\, adjective [Gr. 'a priv. + nhro's wet, moist + -oid: cf. F. an['e]ro["i]de.] Containing no liquid; -- said of a kind of barometer.
{Aneroid barometer}, a barometer the action of which depends on the varying pressure of the atmosphere upon the elastic top of a metallic box (shaped like a watch) from which the air has been exhausted. An index shows the variation of pressure.
From The Collaborative International Dictionary of English v.0.44 [gcide]:
Aneroid \An"e*roid\, noun An aneroid barometer.
From WordNet (r) 2.0 [wn]:
adjective
1: containing no liquid or actuated without the use of liquid; "aneroid barometer"
noun
1: a barometer that measures pressure without using fluids [syn: {aneroid barometer}]
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