The Collaborative International Dictionary
Homacanth
Homacanth \Hom"a*canth\, a. [Homo + Gr. ? a spine.] (Zo["o]l.) Having the dorsal fin spines symmetrical, and in the same line; -- said of certain fishes.
Wiktionary
homacanth
a. (context zoology English) Having the dorsal fin spines symmetrical, and in the same line.