noun, plural pter·y·lae [ter-uh-lee, -lahy] /ˈtɛr əˌli, -ˌlaɪ/. Ornithology.

one of the feathered areas on the skin of a bird.

Compare apterium.

Origin of pteryla

1865–70; < New Latin < Greek pter(ón) feather + hȳ́lē woods
Also called feather tract. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for pterylae


noun plural -lae (-ˌliː)

ornithol any of the tracts of skin that bear contour feathers, arranged in lines along the body of a bird

Word Origin for pteryla

C19: from New Latin, from Greek pteron feather + hulē wood, forest
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012