from The American Heritage® Dictionary of the English Language, 4th Edition
- intransitive v. To turn into wood or become woody through the formation and deposit of lignin in cell walls.
- transitive v. To make woody or woodlike by the deposit of lignin.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To become wood.
- v. , (botany): To develop woody tissue as a result of incrustation of lignin during secondary growth.
- v. , (by extension): To become rigid or fixed, like something made of wood.
- v. To turn into wood; to make ligneous.
from the GNU version of the Collaborative International Dictionary of English
- intransitive v. To become wood.
- transitive v. To convert into wood or into a ligneous substance.
from The Century Dictionary and Cyclopedia
- To convert into or become wood; make or grow woody.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. convert into wood or cause to become woody
If plants which do not lignify for winter manage to direct successful wound repair after grafting and if plants which do lignify for winter do not conduct successful repair of grafted new growth it occurred to me in a speculative way that the reason might perhaps be sought in the nature of the two different kinds of hormones or of enzymes belonging to annuals and to perennials respectively.
In the north where the warm season is not long enough to allow the autumn sprout to lignify sufficiently for bearing the rigors of winter it is killed.
Southern limitation of hickories which have a very short growing period, like the shagbark, may be due to the fact that after a period of summer rest, new growth begins in the autumn rains, and this new growth may not lignify for winter rest.
Late summer grafting is not practical because the scions which make a start do not lignify their new shoots sufficiently to withstand the winter cold.
I noticed that some small branches of the Persian walnuts had been injured, and particularly where grafts had started a little late and had not lignified quite thoroughly I lost whatever grafts had not had time to lignify.
Dehiscence is controlled by a set of transcription factors that define the fruit tissue layers and whether or not they lignify.
So our poets ufed the word boufehold to lignify a family living together: Thus,
Denote the f\r (i or kil firft Ditference by b, the firft or till fecnnd Difference by c; according ns the Interpoliiioii to be made is for Ihe firil or Lift 12 Hours, denote alfo the third Diiference by d; and, a being put b lignify the Diftancc at the Beginning of the Interval, Ih§ in -