from The American Heritage® Dictionary of the English Language, 5th Edition.
- adjective Resembling or consisting of a catkin.
- adjective Bearing catkins.
from The Century Dictionary.
- In botany: Consisting of or resembling an ament: as, an amentaceous inflorescence. Bearing aments: as, amentaceous plants.
from the GNU version of the Collaborative International Dictionary of English.
- adjective Resembling, or consisting of, an ament or aments.
- adjective Bearing aments; having flowers arranged in aments.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective botany Bearing, resembling, or consisting of an
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adjective (of plants) bearing or characterized by aments or catkins
Sorry, no etymologies found.
(_Humulus Lupulus_) not infrequently manifest this change, as do also the bracts of many amentaceous plants, _e. g._ in the male catkins of the walnut, the female catkins of the alder,  of some willows,  &c.
Instances of this kind may be met with in willows, hazels, alders, and other amentaceous plants.
The singular habit of the witch-hazel, whose blossoms open as the leaves fall, may be presumed to be familiar to all readers; and hardly less curious is the freak of the chestnut, which, almost if not quite alone among our amentaceous trees, does not put on its splendid coronation robes till late in June, and is frequently at the height of its magnificence in mid-July.
Befide the grana kermes, I obferved on the cofcoja many large red excrefcences; and of thcfe, two fpecies are diftinguifhed, the one formed on the leaf, the other on the ftems of the amentaceous flowers.
Nature's first flowers are those of the amentaceous trees, and the earliest of these are the pussy willow, the quaking asp, and the hazel.
- catkin. amentaceous, adj. like or composed of catkins. amentiferous, adj. bearing catkins. amentiform, adj. catkin-shaped.