(zoology) Having a winglike tuft of long feathers on each side of the neck.
The pinnate grouse, or prairie chicken.
Origin of pinnate
Latin pinnātusfeatheredfrompinnafeatherpet- in Indo-European roots
American Heritage Dictionary of the English Language, 5th Edition
From LatinpinnÄtus (“feathered"), from pinna (“feather")
Pinnate Sentence Examples
Its broad pinnate tropical leaf was pleasant though strange to look on.
P. phegopteris (beechfern) is a graceful species with a black, slender root-stock, from which the pinnate fronds rise on long stalks, generally about 12 in.
When the pinnate leaf of a Mimosa pudica, the so-called sensitive plant, is pinched or struck, the leaf droops rapidly and the leaflets become approximated together, so that their upper surfaces are in contact.
There is evidence that the stem in some species was a climbing one; the pinnate leaves, arranged on the stem in a two-fifths spiral, were dimorphic, the sterile fronds resembling some forms of (From a drawing by Mrs D.
19), the leaf is unequally pinnate (imparipinnate); when the leaflets or pinnae are placed alternately on either side of the midrib, and not directly opposite to each other, the leaf is alternately pinnate; and when the pinnae are of different sizes, the leaf is interruptedly pinnate.