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short-day

[shawrt-dey]
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adjective Botany.
  1. requiring a short photoperiod.
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Origin of short-day

First recorded in 1915–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for short-day

short-day

adjective
  1. (of plants) able to flower only if exposed to short periods of daylight (less than 12 hours), each followed by a long dark periodCompare long-day
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012