Hippus is a word used to describe an abnormality in the pupillary reflex seen in certain neurological conditions. The word can be phonetically transcribed as /ˈhi.pəs/, where the first syllable is stressed and the "i" is pronounced as in "hip". The second syllable is unstressed and the "u" is pronounced with a short "uh" sound as in "hut". The final "s" is pronounced as a voiceless consonant with a hissing sound. The spelling of hippus follows the standard English rules for pronunciation and is a combination of the Greek words 'ipos' meaning horse and 'ops' meaning eye.
Spasmodic movements of the iris, iridodonesis.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "hippus" has Greek origins. It comes from the Greek word "hippos" (ἵππος) which means "horse".