LATIN DICTIONARYLexicon Latīnum
suffixfirst/second-declension suffix

-oīdeus

-oīdeus (feminine -oīdea, neuter -oīdeum)
Classical[o.iː.de.ʊs]Ecclesiastical[o.i.de.us]

Meaning

  1. alternativemorphemesuffixalternative form of -oīdēs
  2. morphemesuffix-oid, -like

Quick answers

What does -oīdeus mean in Latin?
-oīdeus, a suffix, means “alternative form of -oīdēs”.
How do you pronounce -oīdeus?
In classical Latin, [o.iː.de.ʊs]; in ecclesiastical (church) Latin, [o.i.de.us].