hip·​pus ˈhip-əs How to pronounce hippus (audio)
: a spasmodic variation in the size of the pupil of the eye caused by a tremor of the iris

Dictionary Entries Near hippus

Cite this Entry

“Hippus.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/hippus. Accessed 11 Dec. 2023.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!