acantha (English) comes from Ancient Greek ἄκανθα, from Ancient Greek ἄνθος, from Proto-Hellenic ántʰos, from Proto-Indo-European h₂éndʰos, from Proto-Indo-European -os — Creates action nouns or result nouns from verbs;...
acantha (English): A prickle; A spine or prickly fin; A spinous...