Finnish word valaistus comes from Finnish -us, Finnish valaista

Detailed word origin of valaistus

Dictionary entry	Language	Definition
-us	Finnish (fin)	Forms nouns from verbs, describing an action or event.. Forms nouns, indicating resemblance or association. Short form of the suffix -uus, used where the stem of the root adjective ends in a vowel.
valaista	Finnish (fin)	To light, illuminate. To shed light on, illuminate, clear, clear up, elucidate (to make clear).
valaistus	Finnish (fin)	(religion, Buddhism) enlightenment; bodhi (Buddhism). Lighting.

Words with the same origin as valaistus