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stroma

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Stoma
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stro⋅ma

  [stroh-muh]
Use stroma in a Sentence
–noun, plural -ma⋅ta  [-muh-tuh] .
1. Cell Biology. the supporting framework or matrix of a cell.
2. Anatomy. the supporting framework, usually of connective tissue, of an organ, as distinguished from the parenchyma.
3. Mycology. (in certain fungi) a compact, somatic mass of fungous tissue, in or on which the fructifications may be developed.
4. Botany. the matrix of a chloroplast, containing various molecules and ions.
Origin:
1825–35; < LL strōma mattress < Gk strôma bed-covering; akin to L sternere to spread, strew, strātum (see stratum )

Related forms:
stro⋅mat⋅ic  [stroh-mat-ik] , stromal, stro⋅ma⋅tous, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Stoma
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stro·ma   (strō'mə)   
n.   pl. stro·ma·ta (-mə-tə)

  1. The connective tissue framework of an organ, gland, or other structure, as distinguished from the tissues performing the special function of the organ or part.

  2. The spongy, colorless framework of a red blood cell or other cell.


[Late Latin strōma, mattress, covering, from Greek, bed; see ster-2 in Indo-European roots.]
stro'mal adj., stro·mat'ic (-māt'ĭk) 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: stro·ma
Pronunciation: 'strO-m&
Function: noun
Inflected Form: plural stro·ma·ta /-m&t-&/
1 : the supporting framework of an animal organ typically consisting of connective tissue
2 : the spongy protoplasmic framework of some cells (as a red blood cell) —stro·mal /-m&l/ adjective
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

stroma stro·ma (strō'mə)
n. pl. stro·ma·ta (-mə-tə)

  1. The connective tissue framework of an organ, a gland, or other structure, as distinguished from the tissues performing the special function of the organ or part.

  2. The spongy and colorless framework of a cell.

stro'mal adj.
stro·mat'ic (-māt'ĭk) adj.

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