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 There are 7 words containing OPERIO| PHOTOPERIOD | • photoperiod n. (Biology) The normal duration of natural daylight experienced by an organism; daylength. • PHOTOPERIOD n. the period during every 24 hours when an organism is exposed to daylight.
 |  | PHOTOPERIODS | • photoperiods n. Plural of photoperiod. • PHOTOPERIOD n. the period during every 24 hours when an organism is exposed to daylight.
 |  | PHOTOPERIODIC | • photoperiodic adj. Of, pertaining to, or exhibiting photoperiodism. • PHOTOPERIODIC adj. relating to a photoperiod.
 |  | PHOTOPERIODISM | • photoperiodism n. (Biology) The growth, development and other responses of plants and animals according to the length… • PHOTOPERIODISM n. a plant or animal's response or capacity to respond to photoperiod.
 |  | THERMOPERIODIC | • thermoperiodic adj. Relating to a thermoperiod. • THERMOPERIODIC adj. relating to thermoperiodism, the effect on an organism of rhythmic temperature variations.
 |  | PHOTOPERIODISMS | • photoperiodisms n. Plural of photoperiodism. • PHOTOPERIODISM n. a plant or animal's response or capacity to respond to photoperiod.
 |  | THERMOPERIODISM | • thermoperiodism n. The property of being thermoperiodic. • THERMOPERIODISM n. the effect on an organism of rhythmic temperature variations.
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 Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.Definitions are short excerpt from the WikWik.org and 1Word.ws.
 
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