Webster's Revised Unabridged Dictionary · 1913

Aneroid

Aneroid ({not transcribed}) , adjective

[Greek 'a priv. + nhro`s wet, moist + -oid: compare French anéroide.]

Containing no liquid; -- said of a kind of barometer.
Collocations (1)
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.

aneroid , noun

An aneroid barometer.