What does actinacanthus mean in Latin?

actinacanthus, a adjective, means “having radiating spines or thorns”.

How do you pronounce actinacanthus?

In classical Latin, [ak.tɪ.naˈkan.tʰʊs]; in ecclesiastical (church) Latin, [ak.ti.naˈkan.tus].

adjectivefirst/second-declension adjective

actinacanthus (feminine actinacantha, neuter actinacanthum)

Classical[ak.tɪ.naˈkan.tʰʊs]Ecclesiastical[ak.ti.naˈkan.tus]

singular
form	masculine	feminine	neuter
nominative	actinacanthus	actinacantha	actinacanthum
genitive	actinacanthī	actinacanthae	actinacanthī
dative	actinacanthō	actinacanthae	actinacanthō
accusative	actinacanthum	actinacantham	actinacanthum
ablative	actinacanthō	actinacanthā	actinacanthō
vocative	actinacanthe	actinacantha	actinacanthum

plural
form	masculine	feminine	neuter
nominative	actinacanthī	actinacanthae	actinacantha
genitive	actinacanthōrum	actinacanthārum	actinacanthōrum
dative	actinacanthīs	actinacanthīs	actinacanthīs
accusative	actinacanthōs	actinacanthās	actinacantha
ablative	actinacanthīs	actinacanthīs	actinacanthīs
vocative	actinacanthī	actinacanthae	actinacantha

New Latin; from Ancient Greek [Term?].