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agamospermy

American  
[ag-uh-moh-spur-mee, ey-gam-uh-] / ˈæg ə moʊˌspɜr mi, eɪˈgæm ə- /

noun

Biology.

  1. any form of reproduction, as parthenogenesis, apogamy, and apospory, that involves the sex cell but takes place without fertilization or meiosis.

agamospermy British  
/ ˈæɡəməʊˌspɜːmɪ /

noun

  1. botany formation of seeds in the absence of fertilization; a form of apomixis

"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 agamospermy

1940–45; < Greek ágam ( os ) ( agamic ) + -o- + -sperm + -y 3

Example Sentences

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Some require fertilization to produce seeds, while others can also reproduce without fertilization, a process known as facultative agamospermy.

From Science Daily • Dec. 20, 2025

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.