- spasmodic contraction of the pupil of the eye.
Origin of hippus
1675–85; < New Latin < Greek híppos horse, complaint of the eye
- variant of hippo- as final element of compounds: eohippus.
Origin of -hippus
< Latin < Greek -hippos
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for hippus
"You are drunk again, Hippus," answered Veitel, thoroughly roused.
Here Hippus tried to whistle a tune, and to execute a few steps.
He opened the door, and Mr. Hippus slipped in like a frightened bat.
The door opened, and Hippus appeared, red-faced and much ruffled.
When Veitel had placed his meal before him, Hippus briefly inquired, "How much?"
- Spasmodic, rhythmical dilation and constriction of the pupil, independent of illumination, convergence, or psychic stimuli.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.