n. [Gr. ataktos, not arranged; trichos, hair]
Chaetotaxy in which all setae are not describable in distinct patterns and arrangements; see primordiotrichy.

Online Dictionary of Invertebrate Zoology. . 2005.

Look at other dictionaries:

  • primordiotrichy — n. [L. primordialis, original] The hypothetical theory of chaetotaxy of ancestral types; see atactotrichy …   Dictionary of invertebrate zoology

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