Aneroid

An·e·roid

Aneroid

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

Phrases & Compounds
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

n.
  1. An aneroid barometer.