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See also:STRAIN (through O. Fr. straindre, estraindre, mod. i treindre, from See also:Lat. stringere, to draw tight, related to stress, stretch, See also:string, &c.) , to draw out, extend, stretch, especially with the See also:idea of See also:great effort or beyond measure or limit; hence, from the idea of pressure or constriction, to See also:separate coarser matte or See also:light solids from a liquid by pressure through a " strainer,'' which may be either a See also:sieve or a colander (See also:Lat. colare, to See also:strain), a See also:metal See also:vessel with perforations in the bottom . Another type is the See also:filter (q.v.) . Straining can also be effected by means of cloths, and the name strainer is used of a coarse open See also:cloth usually of See also:flax; a coarser cloth of a more open texture is technically known as " See also:screw." For " strains "and" stresses " in physics see See also:MECHANICS; See also:ELASTICITY and STRENGTH OF MATERIALS . |
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