barometer
/bəˈrɑːmətɚ/
noun
plural
barometers
plural
barometers
Britannica Dictionary definition of BAROMETER
[count]
1
:
an instrument that is used to measure air pressure and predict changes in the weather
2
:
something that is used to indicate or predict something
—
often + of
— barometric
/ˌberəˈmɛtrɪk/
adjective,
always used before a noun