alderdommene is the masculine plural definite of alderdom.

alderdomN

Kven

vanhuusN

Norwegian Bokmål – Kvendict-nob-fkv/src/N_nobfkv.xml:73559Edit on GitHub Suggest

boarisvuohtaN; vuorasvuohtaN

Norsk-nordsamisk ordbokdict-nob-sme/src/N_nobsme.xml:236430Edit on GitHub Suggest

Case	Sg	Pl
Indef	alderdom	alderdommer
Def	alderdommen	alderdommene