barometer

Reading level: hard

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun an instrument that measures atmospheric pressure

Etymology

From baro- + -meter. Coined in 1665 by Robert Boyle as a name for the instrument invented by Torricelli some 20 years earlier; soon thereafter borrowed from English into various languages.

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