aneroid

Pronunciation: an′er-oyd

Definition: Without fluid; denoting a form of barometer without mercury, in which the varying air pressure is indicated by a pointer governed by the movement of the elastic wall of an evacuated chamber. Also used to denote a mercury-free pressure gauge used with some sphygmomanometers.

[G. a- priv. + nēros, wet, + eidos, form]

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