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1. The induction of flowering by prolonged exposure to low temperatures, as during the winter in a temperate climate.
2. The exposure of seeds or plants to low temperatures in order to induce or hasten flowering.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.