DIOPTRA

Meaning of DIOPTRA in English

( n. )

An optical instrument, invented by Hipparchus, for taking altitudes, leveling, etc.

Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012

DIOPTRA — (n.) An optical instrument, invented by Hipparchus, for taking altitudes, leveling, etc.
Английский словарь Webster
DIOPTRA — noun an optical instrument, invented by hipparchus, for taking altitudes, leveling, ·etc.
Webster English vocab
DIOPTRIC — adjective Etymology: Greek dioptrikos of a diopter (instrument), from dioptra Date: 1653 refractive
Толковый словарь английского языка - Merriam Webster
DIOPTRIC — I. (ˈ)dī|äptrik adjective also di·op·tri·cal -rə̇kəl Etymology: dioptric from Greek dioptrikos of an optical instrument used for taking altitudes, from …
Webster's New International English Dictionary
DIOPTRAL — (ˈ)dī|äptrəl adjective Etymology: Latin dioptra + English -al : relating to a diopter or to focal power in diopters
Webster's New International English Dictionary
DIOPTER — dīˈäptər, ˈdīˌä- noun ( -s ) Etymology: Middle French & Latin; Middle French dioptre, from Latin dioptra, from Greek, from …
Webster's New International English Dictionary
DIOPTER — (n.) Alt. of Dioptra
Английский словарь Webster
DIOPTER — ( n. ) Alt. of Dioptra
Webster's Revised Unabridged English Dictionary
DIOPTER — — dioptral , adj. /duy op"teuhr/ , n. 1. Optics. a unit of measure of the refractive power of a …
Random House Webster's Unabridged English Dictionary
DIOPTRIC — adjective Etymology: Greek dioptrikos of a diopter (instrument), from dioptra Date: 1653 : refractive ; specifically : assisting vision by …
Merriam-Webster's Collegiate English vocabulary
DIOPTER — noun Etymology: diopter (an optical instrument), from Middle French dioptre, from Latin dioptra, from Greek, from dia- + opsesthai to …
Merriam-Webster's Collegiate English vocabulary
DIOPTER — noun ·alt. of dioptra.
Webster English vocab
DIOPTRIC — [ dʌɪ'ɒptrɪk ] ■ adjective relating to the refraction of light, especially in the organs of sight or in devices …
Concise Oxford English vocab
DIOPTRE — [ dʌɪ'ɒptə ] ( US diopter ) ■ noun a unit of refractive power, which is equal to the reciprocal …
Concise Oxford English vocab
DIOPTRIC — [di.op.tric] adj [Gk dioptrikos of a diopter (instrument), fr. dioptra] (1653): refractive; specif: assisting vision by refracting and focusing light
Merriam-Webster English vocab
DIOPTER — [di.op.ter] n [diopter (an optical instrument), fr. MF dioptre, fr. L dioptra, fr. Gk, fr. dia- + opsesthai to be …
Merriam-Webster English vocab
TRIANGULATION — in navigation, surveying, and civil engineering, a technique for precise determination of distances and angles for location of a ship's …
Britannica English vocabulary
HERON OF ALEXANDRIA — flourished c. AD 62, Alexandria, Egypt also called Hero Greek geometer and inventor whose writings preserved for posterity a knowledge …
Britannica English vocabulary
DIOPTRE — ( BrE ) ( NAmE di·opter ) / daɪˈɒptə(r); NAmE -ˈɑːp-/ noun ( physics ) a unit for measuring the …
Oxford Advanced Learner's English Dictionary
DIOPTRIC — adj. Optics 1 serving as a medium for sight; assisting sight by refraction (dioptric glass; dioptric lens). 2 of refraction; …
Английский основной разговорный словарь
DIOPTRE — n. (US diopter) Optics a unit of refractive power of a lens, equal to the reciprocal of its focal length …
Английский основной разговорный словарь
DIOPTRIC — adj. Optics 1 serving as a medium for sight; assisting sight by refraction (dioptric glass; dioptric lens). 2 of refraction; …
Concise Oxford English Dictionary
DIOPTRE — n. (US diopter) Optics a unit of refractive power of a lens, equal to the reciprocal of its focal length …
Concise Oxford English Dictionary
DIOPTRIC — adj. Optics 1 serving as a medium for sight; assisting sight by refraction (dioptric glass; dioptric lens). 2 of refraction; …
Oxford English vocab
DIOPTRE — n. (US diopter) Optics a unit of refractive power of a lens, equal to the reciprocal of its focal length …
Oxford English vocab

Webster's Revised Unabridged English Dictionary

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