barometre is the neuter plural indefinite of barometer.

barometerN

Kven

baromeetteriN

Norwegian Bokmål – Kvendict-nob-fkv/src/N_nobfkv.xml:7603Edit on GitHub Suggest

baromehterN

Norsk-nordsamisk ordbokdict-nob-sme/src/N_nobsme.xml:227632Edit on GitHub Suggest

Case	Sg	Pl
Indef	barometer	barometre
Def	barometret	barometrene