geologien is the masculine singular definite of geologi.

geologiN

Kven

geologiaN; geologiiN

Norwegian Bokmål – Kvendict-nob-fkv/src/N_nobfkv.xml:93243Edit on GitHub Suggest

geologiijaN

Norsk-nordsamisk ordbokdict-nob-sme/src/N_nobsme.xml:174680Edit on GitHub Suggest

Case	Sg	Pl
Indef	geologi	geologier
Def	geologien	geologiene