LATIN DICTIONARYLexicon Latīnum
adjectivefirst/second-declension adjective

actiacus

actiacus (feminine actiaca, neuter actiacum)
Classical[akˈti.a.kʊs]Ecclesiastical[akˈt͡siː.a.kus]

Meaning

  1. adjectiveof or pertaining to the town of Actium
  2. adjectivePhoebus

Declension

singular
formmasculinefeminineneuter
nominativeactiacusactiacaactiacum
genitiveactiacīactiacaeactiacī
dativeactiacōactiacaeactiacō
accusativeactiacumactiacamactiacum
ablativeactiacōactiacāactiacō
vocativeactiaceactiacaactiacum
plural
formmasculinefeminineneuter
nominativeactiacīactiacaeactiaca
genitiveactiacōrumactiacārumactiacōrum
dativeactiacīsactiacīsactiacīs
accusativeactiacōsactiacāsactiaca
ablativeactiacīsactiacīsactiacīs
vocativeactiacīactiacaeactiaca

Actĭăcus, a um, adj. Actium,
I. relating to Actium: victoria, at Actium, Suet. Aug. 18: ludi, the games which Augustus revived at Actium in honor of his victory, id. Tib. 6: Phoebus, who had a temple here, Ov. M. 13, 715: acquor, id. H. 15, 166: legiones, which had fought at Actium, Tac. A. 1, 42.

Quick answers

What does actiacus mean in Latin?
actiacus, a adjective, means “of or pertaining to the town of Actium; Phoebus”.
How do you pronounce actiacus?
In classical Latin, [akˈti.a.kʊs]; in ecclesiastical (church) Latin, [akˈt͡siː.a.kus].