LATIN DICTIONARYLexicon Latīnum
proper noun

Ŏpālĭa

Meaning

  1. a festival celebrated on the

Ŏpālĭa, ium, n.,
I. a festival celebrated on the 19th of December, in honor of the goddess Ops, Varr. L. L. 6, § 22 Müll.; cf.: Opalia dies festi, quibus supplicatur Opi, Paul. ex Fest. p. 185 Müll.; Macr. S. 1, 10.

In the Academy Smith's classical dictionaries

AntiquitiesOpaliaOpalia a Roman festival in honour of Ops (or Opis), which was celebrated on the 14th day before the Kalends of January (Dec. 19), being the third day …

Quick answers

What does Ŏpālĭa mean in Latin?
Ŏpālĭa, a proper noun, means “a festival celebrated on the”.