noun[mass noun] Medicine
Spasmodic or rhythmic contraction of the pupil of the eye, a symptom of some neurological conditions.
More example sentences
- Even a pronounced hippus may be physiological and does not necessarily require extensive diagnostic investigations.
late 17th century: modern Latin, from Greek hippos 'tremor of the eyes'.
More definitions of hippusDefinition of hippus in:
- The US English dictionary