Webster's 1828 Dictionary
PLUMOSE, PLUMOUS
a.[L. plumosus.] Feathery; resembling feathers. 1. In botany, a plumose bristle is one that has hairs growing on the sides of the main bristle. Plumose pappus or down is a flying crown to some seeds, composed of feathery hairs.
Webster's 1913 Dictionary
PLUMOSE; PLUMOUS
Plu *mose ", Plu "mous, a. Etym: [L. plumosus, fr. pluma feather: cf. F.plumeux.]
1. Having feathers or plumes.
2. Having hairs, or other párts, arranged along an axis like a feather; feathery; plumelike; as, a plumose leaf; plumose tentacles.
New American Oxford Dictionary
plumose
plu mose |ˈplo͞oˌmōs ˈplumoʊs | ▶adjective chiefly Biology having many fine filaments or branches that give a feathery appearance. ORIGIN mid 18th cent.: from Latin plumosus ‘full of down or feathers, ’ from pluma ‘down. ’
Oxford Dictionary
plumose
plumose |pluːˈməʊs, ˈpluːməʊs, -z | ▶adjective chiefly Biology having many fine filaments or branches which give a feathery appearance. ORIGIN mid 18th cent.: from Latin plumosus ‘full of down or feathers ’, from pluma ‘down ’.
The Wordsmith Dictionary