What does polyanthus mean in Latin?

polyanthus, a adjective, means “Having many flowers”.

How do you pronounce polyanthus?

In classical Latin, [pɔ.lyˈan.tʰʊs]; in ecclesiastical (church) Latin, [po.liˈan.tus].

adjectivefirst/second-declension adjective

polyanthus (feminine polyantha, neuter polyanthum)

Classical[pɔ.lyˈan.tʰʊs]Ecclesiastical[po.liˈan.tus]

singular
form	masculine	feminine	neuter
nominative	polyanthus	polyantha	polyanthum
genitive	polyanthī	polyanthae	polyanthī
dative	polyanthō	polyanthae	polyanthō
accusative	polyanthum	polyantham	polyanthum
ablative	polyanthō	polyanthā	polyanthō
vocative	polyanthe	polyantha	polyanthum

plural
form	masculine	feminine	neuter
nominative	polyanthī	polyanthae	polyantha
genitive	polyanthōrum	polyanthārum	polyanthōrum
dative	polyanthīs	polyanthīs	polyanthīs
accusative	polyanthōs	polyanthās	polyantha
ablative	polyanthīs	polyanthīs	polyanthīs
vocative	polyanthī	polyanthae	polyantha

From Ancient Greek πολυ- (polu-) + ἄνθος (ánthos).