LATIN DICTIONARYLexicon Latīnum
adjectivefirst/second-declension adjective

Olympius

Olympius (feminine Olympia, neuter Olympium)
Classical[ɔˈlym.pi.ʊs]Ecclesiastical[oˈlim.pi.us]

Meaning

  1. adjectiveOlympian

Declension

singular
formmasculinefeminineneuter
nominativeOlympiusOlympiaOlympium
genitiveOlympiīOlympiaeOlympiī
dativeOlympiōOlympiaeOlympiō
accusativeOlympiumOlympiamOlympium
ablativeOlympiōOlympiāOlympiō
vocativeOlympieOlympiaOlympium
plural
formmasculinefeminineneuter
nominativeOlympiīOlympiaeOlympia
genitiveOlympiōrumOlympiārumOlympiōrum
dativeOlympiīsOlympiīsOlympiīs
accusativeOlympiōsOlympiāsOlympia
ablativeOlympiīsOlympiīsOlympiīs
vocativeOlympiīOlympiaeOlympia

Phrases from Meissner's Latin Phrase-Book

Olympia vincere (Ολύμπια νικαν)
to win a prize at the Olympian games.
ludi Olympia (not ludi Olympici), Pythia
the Olympian, Pythian games.

Ŏlympĭus, a, um, v. Olympia, D.

Origins

Borrowed from Ancient Greek Ὀλύμπιος (Olúmpios); morphologically Olympus + -ius.

In the Academy Smith's classical dictionaries

Quick answers

What does Olympius mean in Latin?
Olympius, a adjective, means “Olympian”.
How do you pronounce Olympius?
In classical Latin, [ɔˈlym.pi.ʊs]; in ecclesiastical (church) Latin, [oˈlim.pi.us].