Pronunciation: (pin'āt, -it), [key]
1. resembling a feather, as in construction or arrangement; having parts arranged on each side of a common axis: a pinnate branch; pinnate trees.
2. Bot.(of a leaf) having leaflets or primary divisions arranged on each side of a common stalk. Also,pin'nat•ed.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.