Dictionary
ver•nal•ize
Pronunciation: (vûr'nl-īz"), [key]—
v.t., -ized, -iz•ing.
to shorten the growth period of (a plant) by chilling or other special treatment of it, its seeds, or its bulbs.
Also, esp. Brit.,ver'nal•ise".Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.