adj ·Rare ·Advanced level

Definitions

Adjective

1. 1
   Having spines of different sizes. not-comparable
2. 2
   Having the spines of the dorsal fin asymmetrical, or thickened alternately on the right and left sides. not-comparable

Etymology

From hetero- + Ancient Greek ἄκανθα (ákantha, “spine”).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.