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.

1855–60; < Neo-Latin < Greek prōto- proto- + nêma thread

protonemal, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To protonemata
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]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
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.
Cite This Source
Copyright © 2014, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature