Origin of sinistral
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for sinistral
Sinistral: extending to or at the left from the median line.Explanation of Terms Used in Entomology
John. B. Smith
If we were very fortunate, we might find a sinistral, or “left-handed” specimen.Our British Snails
John William Horsley
Sinistral: Having the aperture of the shell at the left; opposite of dextral.
This is carried outward in a sinistral spiral to the noded shoulder.Ancient Pottery of the Mississippi Valley
William H. Holmes
Gasteropod shells may be sinistral or dextral, according as the whorls turn to the left or right.
- of, relating to, or located on the left side, esp the left side of the body
- a technical term for left-handed
- (of the shells of certain gastropod molluscs) coiling in a clockwise direction from the apex
C15 (in the obsolete sense: adverse, evil); C19 (in current senses): from Medieval Latin sinistrālis. See sinister
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
Word Origin and History for sinistral
late 15c., "unlucky," from Old French senestral, sinistral or Medieval Latin *sinistralis, from sinister (see sinister). Meaning "on the left side" is from 1803. Related: Sinistrally.
Online Etymology Dictionary, © 2010 Douglas Harper
- Of, facing, or located on the left side; left.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.