Definitions

from The Century Dictionary.

  • In ichthyology having asymmetrical dorsal and anal fin-spines, alternately broader on one side than on the other; not homacanth.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective (Zoöl.) Having the spines of the dorsal fin unsymmetrical, or thickened alternately on the right and left sides.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective zoology Having the spines of the dorsal fin asymmetrical, or thickened alternately on the right and left sides.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

hetero- + Ancient Greek a spine.

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Examples

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