optometer

US:USA pronunciation: respellingUSA pronunciation: respelling(op tomi tər)


WordReference Random House Unabridged Dictionary of American English © 2026
op•tom•e•ter  (op tomi tər),USA pronunciation n. 
  1. Ophthalmologyany of various instruments for measuring the refractive error of an eye.
  • opto- + -meter 1730–40

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