バロメーター

ばろめーたー
noun
barometer; indicator; gauge
science
1. barometer; indicator; measure
something used as an indicator or measure of a situation or condition (figurative)
An indicator that serves as a barometer of the economy.
Stock prices are a barometer of the economy.
Complexion is a barometer of health.
Social media follower counts are used as a barometer of popularity.
2. barometer (instrument)
an instrument for measuring atmospheric pressure
The barometer is dropping rapidly.
気圧(きあつ)をバロメーターで測(はか)る。
To measure atmospheric pressure with a barometer.
I checked weather changes with a barometer before the mountain climb.

バロメーター is a loanword from English 'barometer,' used more often figuratively than literally in Japanese.

USAGE (sense 1, figurative):
An indicator or measure of a situation.

USAGE (sense 2, the instrument):
An instrument measuring atmospheric pressure.

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