hypoptilum Meaning, Definition & Usage

Hy*pop"ti*lum noun

Etymology

NL., fr. Gr. beneath + down.

Wordforms

plural L Hypoptila E Hypoptilums

Definitions

1. (Zoöl.) An accessory plume arising from the posterior side of the stem of the contour feathers of many birds; -- called also aftershaft. See Illust. of Feather.