laboratoriet is the neuter singular definite of laboratorium.

laboratoriumN

Kven

laboratooriumiN

Norwegian Bokmål – Kvendict-nob-fkv/src/N_nobfkv.xml:102300Edit on GitHub Suggest

laboratoriaN

Norsk-nordsamisk ordbokdict-nob-sme/src/N_nobsme.xml:231178Edit on GitHub Suggest

Case	Sg	Pl
Indef	laboratorium	laboratorier
Def	laboratoriet	laboratoriene