OPSIOMETER

Etymology

Noun

opsiometer (plural opsiometers)

An old instrument for measuring vision and determining the focal length of a lens that can correct an individual's imperfect eyesight.

Anagrams

• opisometer

Source: Wiktionary


Op`si*om"e*ter, n. Etym: [Gr. -meter: cf. F. opsiomètre.]

Definition: An instrument for measuring the limits of distincts vision in different individuals, and thus determiming the proper focal length of a lens for correcting imperfect sight. Brande & C.

Source: Webster’s Unabridged Dictionary 1913 Edition



RESET




Word of the Day

25 November 2024

ONCHOCERCIASIS

(noun) infestation with slender threadlike roundworms (filaria) deposited under the skin by the bite of black fleas; when the eyes are involved it can result in blindness; common in Africa and tropical America


coffee icon

Coffee Trivia

According to Statista, the global coffee industry is worth US$363 billion in 2020. The market grows annually by 10.6%, and 78% of revenue came from out-of-home establishments like cafes and coffee beverage retailers.

coffee icon