Nearby Words
noun, plural -mas, -ma·ta 
[-muh-tuh] .
[-muh-tuh] . 1.
Anatomy. a crossing or decussation, as that of the optic nerves at the base of the brain.
2.
Cell Biology. a point of overlap of paired chromatids at which fusion and exchange of genetic material take place during prophase of meiosis.
Origin:
1830–40; < Greek: crosspiece of wood, cross-bandage, equivalent to chi chi1 + -asma noun suffix
1830–40; < Greek: crosspiece of wood, cross-bandage, equivalent to chi chi1 + -asma noun suffix
Related forms
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source
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Link To chiasma
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Chiasma
is always a great word to know.
So is thorax. Does it mean:
| the part of the trunk between the neck and the abdomen, enclosed by the ribs, sternum, and vertebrae, which contains the heart and lungs; the chest |
| situated under the tongue, or on the underside of the tongue |
Collins
World English Dictionary
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Medical Dictionary
chiasma chi·as·ma (kī-āz'mə) or chi·asm (kī'āz'əm)
n. pl. or chi·as·mas, chi·as·ma·ta (-mə-tə), chi·as·ms
A crossing or intersection of two tracts, as of nerves or ligaments.
The point of contact between paired chromatids during meiosis, resulting in a cross-shaped configuration and representing the cytological manifestation of crossing over.
chi·as'mal or chi·as'mic or chi'as·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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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
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