\\“+\ noun (plural ptychopterygia)
Etymology: New Latin, from ptych- + Greek pterygion little wing, fin — more at pterygium
: a primitive fin consisting of a low triangular flap supported by a series of unbranched rays

Useful english dictionary. 2012.

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Look at other dictionaries:

  • ptychopterygium — the low adherent type of paired fin connected with a broad base to the body as in Cladoselache …   Dictionary of ichthyology

  • ptychopterygium — pty·cho·pterygium …   English syllables

  • ptychopterygial — |tīkō+ adjective Etymology: New Latin ptychopterygium + English al : of or relating to a ptychopterygium …   Useful english dictionary

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