Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The study or description of the arrangement of feathers, or of the pterylae, of birds.

from the GNU version of the Collaborative International Dictionary of English

  • n. The study or description of the arrangement of feathers, or of the pterylæ, of birds.

from The Century Dictionary and Cyclopedia

  • n. The description of pterylæ, or a treatise on pterylosis: a science which had its origin in the “System der Pterylographie” of Nitzsch, 1833-40.

Etymologies

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