aneroid

Meanings

1. 1
   adj

   operating without liquid, especially by using air pressure on a flexible metal chamber

   The climbers carried an aneroid barometer to estimate their altitude.

2. 2
   noun

   an aneroid barometer

   The guide checked the aneroid before the group began its descent.

Borrowed from French anéroïde, formed from Greek a- ("not, without") and nēros ("wet") with -oid. The term was coined in the nineteenth century for pressure instruments that use no liquid.

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