What does acūsticus mean in Latin?

acūsticus, a adjective, means “acoustic”.

How do you pronounce acūsticus?

In classical Latin, [aˈkuːs.tɪ.kʊs]; in ecclesiastical (church) Latin, [aˈkus.ti.kus].

adjectivefirst/second-declension adjective

acūsticus (feminine acūstica, neuter acūsticum)

Classical[aˈkuːs.tɪ.kʊs]Ecclesiastical[aˈkus.ti.kus]

singular
form	masculine	feminine	neuter
nominative	acūsticus	acūstica	acūsticum
genitive	acūsticī	acūsticae	acūsticī
dative	acūsticō	acūsticae	acūsticō
accusative	acūsticum	acūsticam	acūsticum
ablative	acūsticō	acūsticā	acūsticō
vocative	acūstice	acūstica	acūsticum

plural
form	masculine	feminine	neuter
nominative	acūsticī	acūsticae	acūstica
genitive	acūsticōrum	acūsticārum	acūsticōrum
dative	acūsticīs	acūsticīs	acūsticīs
accusative	acūsticōs	acūsticās	acūstica
ablative	acūsticīs	acūsticīs	acūsticīs
vocative	acūsticī	acūsticae	acūstica

Borrowed from Ancient Greek ᾰ̓κουστῐκός (ăkoustĭkós, “of or for hearing”), from ᾰ̓κούω (ăkoúō, “to hear”) + -ῐκός (-ĭkós, adjectival suffix).