diopter, dioptre
(noun) a unit of measurement of the refractive power of a lens which is equal to the reciprocal of the focal length measured in meters; used by oculists
Source: WordNet® 3.1
dioptre (plural dioptres)
Alternative spelling of diopter
• diopter, peridot, periodt, proetid, proteid, protide, pterido-, pteroid, reptoid
Source: Wiktionary
Di*op"tre, n. Etym: [F. See 2d Dioptric.] (Optics)
Definition: A unit employed by oculists in numbering glasses according to the metric system; a refractive power equal to that of a glass whose principal focal distance is one meter.
Source: Webster’s Unabridged Dictionary 1913 Edition
28 February 2025
(adjective) pertaining to giving directives or rules; “prescriptive grammar is concerned with norms of or rules for correct usage”
According to Guinness World Records, the largest coffee press is 230 cm (7 ft 6 in) in height and 72 cm (2 ft 4 in) in diameter and was created by Salzillo Tea and Coffee (Spain) in Murcia, Spain, in February 2007. The cafetière consists of a stainless steel container, a filtering piston, and a superior lid.
