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nyctitropism

British  
/ ˌnɪktɪˈtrɒpɪk, nɪkˈtɪtrəˌpɪzəm /

noun

  1. a tendency of some plant parts to assume positions at night that are different from their daytime positions

"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

Other Word Forms

Etymology

Origin of nyctitropism

C19: nyct-, from Greek nukt-, nux night + -tropism

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.