• WordNet 3.6
    • adj defoliate deprived of leaves
    • v defoliate strip the leaves or branches from "defoliate the trees with pesticides"
    • ***
Webster's Revised Unabridged Dictionary
    • a Defoliate Deprived of leaves, as by their natural fall.
    • ***
Century Dictionary and Cyclopedia
    • defoliate To deprive of leaves; cut or pick off the leaves of.
    • defoliate Deprived of leaves; having cast its leaves.
    • ***
Chambers's Twentieth Century Dictionary
    • v.t Defoliate de-fō′li-āt to deprive of leaves
    • ***


Chambers's Twentieth Century Dictionary
Low L. defoliāre, -ātumde, off, folium, a leaf.


In literature:

Several successive defoliations are liable to kill a tree.
"Studies of Trees" by Jacob Joshua Levison
The aphids were very numerous and unfortunately caused the defoliation of all the currants with the exception of the blacks.
"Trees, Fruits and Flowers of Minnesota, 1916" by Various
Many small trees have been entirely stripped and large ones almost defoliated.
"Northern Nut Growers Association Report of the Proceedings at the" by Various
They are a great annoyance, and have defoliated whole vineyards here last fall.
"The Cultivation of The Native Grape, and Manufacture of American Wines" by George Husmann
Shrunken kernels are a logical result of early defoliation.
"Northern Nut Growers Association Thirty-Fourth Annual Report 1943" by Various
Very often this premature defoliation results in the production of a new crop of leaves and some shoot growth.
"Northern Nut Growers Association Report of the Proceedings at the Thirty-Eighth Annual Meeting" by Northern Nut Growers Association
When neglected for two or three years, they often defoliate large trees.
"Soil Culture" by J. H. Walden
Their labour often results in the complete defoliation of the tree.
"Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2" by Various
Defoliation, 109, 240, 244.
"Disease in Plants" by H. Marshall Ward

In news:

AMVAC Chemical Corp. Has acquired the cotton defoliant product tribufos from Bayer CropScience.
Has acquired the cotton defoliant product tribufos (sold under the trade name Def) from Bayer CropScience.
Mystery defoliation at treeline in the Kenai Mountains.
Calamagrostis canadensis, a native grass, thrives under an aspen canopy opened up after defoliation by larvae of the aspen leaf-miner.
Downy Mildew (fungus – Peronospora sparsa) is a highly destructive disease on roses, causing severe and rapid defoliation.
People are noticing and asking what is up with the defoliation of eucalyptus trees lately.
The forest tent caterpillar is native to Minnesota and is the one that can defoliate millions of acres in Northern Minnesota.
"If you don't like the weather, wait five minutes," locals joke about the sudden hot and cold fronts that blow through, frequently defoliating plant and human life.
To Jody Herr, it was a telltale sign that one of his tomato fields had been poisoned by 2,4-D, the powerful herbicide that was an ingredient in Agent Orange, the Vietnam War defoliant.
UCare CEO Nancy Feldman seeks to help Vietnamese affected by Agent Orange , after losing her husband to possible aftereffects from the defoliant.
The United States began a landmark project Thursday to clean up a dangerous chemical left from the defoliant Agent Orange — 50 years after American planes first sprayed it on Vietnam's jungles to destroy enemy cover.
It's considered the lowest recorded defoliation since the State Department of Agriculture's Gypsy Moth Suppression Program began in 1970.
Defoliate 130 miles of populated land along the Rio Grande to thwart illegal crossers.
We used defoliation in Vietnam to eliminate hiding places.
Because he served in the US Army in South Vietnam during 1968 and '69, during a period of heavy spraying of the toxic defoliant Agent Orange, Uncle Sam pays his medical bills.

In science:

Note on gynandromorphism in the eucalyptus defoliator thyrinteina arnobia (stoll, 1782) (lepidoptera: Geometridae).
A Developmental Network Theory of Gynandromorphs, Sexual Dimorphism and Species Formation