vitaminet is the neuter singular definite of vitamin.

vitaminN

Kven

vitamiiniN

Norwegian Bokmål – Kvendict-nob-fkv/src/N_nobfkv.xml:75189Edit on GitHub Suggest

vitamiidnaN

Norsk-nordsamisk ordbokdict-nob-sme/src/N_nobsme.xml:37389Edit on GitHub Suggest

Case	Sg	Pl
Indef	vitamin	vitaminer
Def	vitaminet	vitaminene