This is the 8750th most frequent French word.
baromètre
"Baromètre" in French means "barometer," a device that measures atmospheric pressure.
Here, 'baromètre' refers directly to the meteorological instrument used to measure atmospheric pressure.
Le baromètre indique une pression atmosphérique stable aujourd'hui.
The barometer indicates stable atmospheric pressure today.
In this sentence, 'baromètre' is used metaphorically to denote an indicator or measure of public sentiment.
La popularité de cette décision politique est un baromètre de l'opinion publique.
The popularity of this political decision is a barometer of public opinion.
This usage of 'baromètre' symbolizes a predictive indicator based on someone's mood in interpersonal dynamics.