acantha

Definition from Wiktionary, a free dictionary

[edit] English

[edit] Etymology

Greek ἄκανθα (akantha), “‘thorn’”), from ἄκρα (akra), “‘point’”). See acute.

[edit] Noun

acantha (plural acanthas)

1. (botany): A prickle.
2. (zoology): A spine or prickly fin.
3. (anatomy): The vertebral column; the spinous process of a vertebra - Dunglison