Origin of sinistral
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
A genus of minute land shells, resembling Vertigo, but separated because they are dextral, while Vertigo is sinistral.A Conchological Manual|George Brettingham Sowerby
Dextral animals, with shell coiled pseudo-sinistrally; operculum with sinistral spiral; pallial cavity dorsal.
Sinistral: Having the aperture of the shell at the left; opposite of dextral.The Sea-beach at Ebb-tide|Augusta Foote Arnold
The sinistral circuit is one in which the center is on the left hand, while the dextral circuit has its center to the right.The Winter Solstice Altars at Hano Pueblo|J. Walter Fewkes
Word Origin 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.