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 (thûr′mō-pîr′ē-ə-dĭz′əm) also ther·mo·pe·ri·o·dic·i·ty (-dĭs′ĭ-tē)
The effect on an organism of the rhythmic fluctuation of temperature, including responses associated with thermal changes accompanying the alternation of day and night.
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.

thermoperiodism, thermoperiodicity

the effect on the growth and reproduction of plants or animals of timed exposures to varied temperatures. — thermoperiod, n.thermoperiodic, adj.
See also: Biology
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The relation between age, light, variety and thermoperiodicity of tomotoes.