saccade

sac·cade  (s-käd, s-)

n.

A rapid intermittent eye movement, as that which occurs when the eyes fix on one point after another in the visual field.

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[French, twitch, from Old French, from Old North French saqiuer, to pull, from sac, sack; see sac.]

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sac·cadic adj.

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saccade [səˈkɑːd -ˈkeɪd]

n

1. (Life Sciences & Allied Applications / Physiology) the movement of the eye when it makes a sudden change of fixation, as in reading

2. (Individual Sports & Recreations / Horse Training, Riding & Manège) a sudden check given to a horse

[from French: a jerk on the reins of a horse]

Thesaurus

Noun	1.	saccade - a rapid, jerky movement of the eyes between positions of rest eye movement - the movement of the eyes
	2.	saccade - an abrupt spasmodic movement jerking, jolt, jerk movement, motility, motion, move - a change of position that does not entail a change of location; "the reflex motion of his eyebrows revealed his surprise"; "movement is a sign of life"; "an impatient move of his hand"; "gastrointestinal motility"