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histogen

American  
[his-tuh-juhn, -jen] / ˈhɪs tə dʒən, -ˌdʒɛn /

noun

Botany.

  1. a region in a plant in which tissues differentiate.

histogen British  
/ ˈhɪstəˌdʒɛn /

noun

  1. (formerly) any of three layers in an apical meristem that were thought to give rise to the different parts of the plant: the apical meristem is now regarded as comprising two layers See corpus tunica

"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

Etymology

Origin of histogen

First recorded in 1920–25; histo- + -gen

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.