the act of checking a horse quickly with a single strong pull of the reins.
Ophthalmology. the series of small, jerky movements of the eyes when changing focus from one point to another.
Origin of saccade
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
the movement of the eye when it makes a sudden change of fixation, as in reading
a sudden check given to a horse
Word Origin for saccade
C18: from French: a jerk on the reins of a horse
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
1705, from French saccade "a jerk," from obsolete saquer "to shake, pull," dialectal variant of Old French sachier, ultimately from Latin saccus "sack" (see sack (n.1)). Related: Saccadic.
Online Etymology Dictionary, © 2010 Douglas Harper
A rapid intermittent eye movement, as that which occurs when the eyes fix on one point after another in the visual field.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.