Medical Dictionary

pupillometer

noun pu·pil·lom·e·ter \ˌpyü-pə-ˈläm-ət-ər\

Medical Definition of PUPILLOMETER

:  an instrument for measuring the diameter of the pupil of the eye
pu·pil·lom·e·try \-ə-trē\ noun, plural pu·pil·lom·e·tries

Browse

How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears