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protoplast

 - 4 dictionary results

pro⋅to⋅plast

  [proh-tuh-plast]
Use protoplast in a Sentence
–noun
1. Biology.
a. the contents of a cell within the cell membrane, considered as a fundamental entity.
b. the primordial living unit or cell.
2. a person or thing that is formed first; original; prototype.
3. the hypothetical first individual or one of the supposed first pair of a species or the like.
Origin:
1525–35; < LL prōtoplastus the first man, n. use of Gk prōtóplastos formed first. See proto-, -plast

Related forms:
pro⋅to⋅plas⋅tic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To protoplast
pro·to·plast   (prō'tə-plāst')   
n.  

  1. Biology The living material of a plant or bacterial cell, including the protoplasm and plasma membrane after the cell wall has been removed.

  2. One that is the first made or formed; a prototype.


[French protoplaste, from Old French, the first man, from Late Latin prōtoplastus, from Greek prōtoplastos : prōto-, proto- + plastos, formed, molded; see -plast.]
pro'to·plas'tic adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: pro·to·plast
Pronunciation: 'prOt-&-"plast
Function: noun
: the nucleus, cytoplasm, and plasma membrane of a cell asdistinguished from inert walls and inclusions
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

protoplast pro·to·plast (prō'tə-plāst')
n.

  1. The living material of a plant or bacterial cell, including the protoplasm and plasma membrane after the cell wall has been removed.

  2. One that is the first made or formed; a prototype.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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