Definitions

from The Century Dictionary.

  • noun One of the small bones forming the basal support of the pectoral fins of bony fishes, lying between the fin-rays and the hypo- and hypercoracoid; an actinost.
  • Of or pertaining to a pterygium.

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

  • adjective anatomy Of or pertaining to the pterygium

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