from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An area on the skin of a bird from which feathers grow.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. One of the areas of a bird's skin on which feathers grow.

from the GNU version of the Collaborative International Dictionary of English

  • n. One of the definite areas of the skin of a bird on which feathers grow; -- contrasted with apteria.

from The Century Dictionary and Cyclopedia

  • n. A feather-tract; one of the sets or clumps of feathers which are inserted in definite tracts or areas in the skin of a bird, separated by apteria, or places where no feathers grow.


New Latin : Greek pteron, wing, feather; see -pter + Greek hūlē, forest, matter.
(American Heritage® Dictionary of the English Language, Fourth Edition)
New Latin, from Ancient Greek. (Wiktionary)


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