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long-day
[ lawng-dey, long- ]
/ ˈlɔŋˈdeɪ, ˈlɒŋ- /
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adjective Botany.
requiring a long photoperiod in order to flower.
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Origin of long-day
First recorded in 1915–20
Words nearby long-day
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use long-day in a sentence
British Dictionary definitions for long-day
long-day
adjective
(of certain plants) able to mature and flower only if exposed to long periods of daylight (more than 12 hours), each followed by a shorter period of darknessCompare short-day
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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