Try Our Apps


The Best Internet Slang


[proh-tuh-nee-muh] /ˌproʊ təˈni mə/
noun, plural protonemata
[proh-tuh-nee-muh-tuh] /ˌproʊ təˈni mə tə/ (Show IPA).
a primary, usually filamentous structure produced by the germination of the spore in mosses and certain related plants, and from which the leafy plant which bears the sexual organs arises as a lateral or terminal shoot.
Origin of protonema
1855-60; < New Latin < Greek prōto- proto- + nêma thread
Related forms
protonemal, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
Cite This Source
British Dictionary definitions for protonemata


noun (pl) -nemata (-ˈniːmətə)
a branched threadlike structure that grows from a moss spore and eventually develops into the moss plant
Derived Forms
protonemal, protonematal (ˌprəʊtəˈniːmətəl; -ˈnɛmətəl) adjective
Word Origin
C19: from New Latin, from proto- + Greek nema thread
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
Cite This Source
protonemata in Science
Plural protonemata (prō'tə-nē'mə-tə, -něm'ə-)
The green filamentous or flat, thallus-like structure that grows from the germinated spores of liverworts and mosses and eventually gives rise to a mature gametophyte.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for protonema

Few English speakers likely know this word

Word Value for protonemata

Scrabble Words With Friends

Nearby words for protonemata