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inch1
/inch/, n.1. a unit of length, 1/12 foot, equivalent to 2.54 centimeters.2. a very small amount of anything; narrow margin: to win by an inch; to avert disaster by an inch.3. by inches,a. narrowly; by a narrow margin: escaped by inches.b. Also, inch by inch. by small degrees or stages; gradually: The miners worked their way through the narrow shaft inch by inch.4. every inch, in every respect; completely: That horse is every inch a thoroughbred.5. within an inch of, nearly; close to: He came within an inch of getting killed in the crash.v.t., v.i.6. to move by inches or small degrees: We inched our way along the road.[bef. 1000; ME; OE ynce < L uncia twelfth part, inch, ounce. See OUNCE1]inch2/inch/, n. Scot.a small island near the seacoast.[1375-1425; late ME < ScotGael innse, gen. of innis island, OIr inis, c. Welsh ynys]
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Unit of measure equal to 1/36 yard and since 1959 defined officially as 2.54 cm (see metre). David I of Scotland (с 1150) defined the inch as the breadth of a man's thumb at the base of the nail; usually the thumb breadths of three menone small, one medium, and one largewere added and then divided by three. During the reign of England's Edward II, the inch was defined as "three grains of barley, dry and round, placed end to end lengthwise." At various times it has also been defined as the combined lengths of 12 poppy seeds. See also foot; International System of Units; measurement; metric system.* * *
▪ unit of measurementunit of British Imperial (British Imperial System) and United States Customary measure equal to 1/36 of a yard. The unit derives from the Old English ince, or ynce, which in turn came from the Latin unit uncia, which was “one-twelfth” of a Roman foot, or pes. (The Latin word uncia was the source of the name of another English unit, the ounce.) The old English ynce was defined by King David I (David I) of Scotland about 1150 as the breadth of a man's thumb at the base of the nail. To help maintain consistency of the unit, the measure was usually achieved by adding the thumb breadth of three men—one small, one medium, and one large—and then dividing the figure by three. During the reign of King Edward II (Edward II), in the early 14th century, the inch was defined as “three grains of barley, dry and round, placed end to end lengthwise.” At various times the inch has also been defined as the combined lengths of 12 poppyseeds. Since 1959 the inch has been defined officially as 2.54 cm.* * *
Universalium. 2010.