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[spek-trin] /ˈspɛk trɪn/
noun, Biochemistry.
a rodlike structural protein of the red blood cell membrane.
Origin of spectrin
1968; spect(e)r (cf. ghost def. 12) + -in2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for spectrin


any one of a class of fibrous proteins found in the membranes of red blood cells, the brain, the intestine, etc
Word Origin
C20: from spectr(e) + -in, referring to the ghosts (isolated cell membranes) of red blood cells, the source of the first known member of the class
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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spectrin in Medicine

spectrin spec·trin (spěk'trĭn)
A contractile protein of high molecular weight that is a component of a network in the membrane of red blood cells, giving the cells flexibility.

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