protonema

protonema

[proh-tuh-nee-muh]
noun, plural protonemata [proh-tuh-nee-muh-tuh] . Botany.
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:
1855–60; < Neo-Latin < Greek prōto- proto- + nêma thread

protonemal, adjective
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World English Dictionary
protonema (ˌprəʊtəˈniːmə)
 
n , pl -nemata
a branched threadlike structure that grows from a moss spore and eventually develops into the moss plant
 
[C19: from New Latin, from proto- + Greek nema thread]
 
proto'nemal
 
adj
 
protonematal
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
protonema   (prō'tə-nē'mə)  Pronunciation Key 
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.
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