LATIN DICTIONARYLexicon Latīnum
adjectivefirst/second-declension adjective

acaustus

acaustus (feminine acausta, neuter acaustum)
Classical[aˈkau̯s.tʊs]Ecclesiastical[aˈkau̯s.tus]

Meaning

  1. adjectiveincombustible

Declension

singular
formmasculinefeminineneuter
nominativeacaustusacaustaacaustum
genitiveacaustīacaustaeacaustī
dativeacaustōacaustaeacaustō
accusativeacaustumacaustamacaustum
ablativeacaustōacaustāacaustō
vocativeacausteacaustaacaustum
plural
formmasculinefeminineneuter
nominativeacaustīacaustaeacausta
genitiveacaustōrumacaustārumacaustōrum
dativeacaustīsacaustīsacaustīs
accusativeacaustōsacaustāsacausta
ablativeacaustīsacaustīsacaustīs
vocativeacaustīacaustaeacausta

ăcaustus, a, um, adj., = ἄκαυστος,
I. incombustible; hence subst. m. (sc. lapis), the carbuncle, since it was regarded as incombustible: acaustoe (i. e. ἄκαυστοι), Plin. 37, 7, 25, § 92; v. Sill. a. h. l.

Quick answers

What does acaustus mean in Latin?
acaustus, a adjective, means “incombustible”.
How do you pronounce acaustus?
In classical Latin, [aˈkau̯s.tʊs]; in ecclesiastical (church) Latin, [aˈkau̯s.tus].