sieve

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sieve

(siv),
A meshed or perforated device for separating fine particles from coarser ones.
[O.E. sive]

sieve

A slang term for an A&E/ER doctor who admits almost every patient he or she sees to hospital.

sieve

(sĭv)
A device consisting of a mesh with holes of uniform size. It is used to separate particles above a certain size from solutions or powders.

molecular sieve

A type of sieve in which the molecular material present in the gel or crystal will adsorb molecules of a certain kind and let others pass.
References in periodicals archive ?
After watching his sievelike defence ship another three goals in a torrid first-half at Kilmarnock on Saturday, Lennon knows urgent repair work is required before any more damage is done.
These include: (1) tubular pattern with small, round, uniform, and back-to-back tubules, lined by cuboidal to flat cells; (2) ductal pattern typically composed of large glands with variable size, occasionally with intraglandular villous papillae and cellular budding, the glands being lined by 1 to several layers of columnar cells with endometrioid-like appearance; (3) retiform growth characterized by slitlike branching glands, some with intraglandular papillae lined by 1 to several layers of flat, cuboidal, or columnar cells; slit-like and cystic spaces may merge and impart a sievelike appearance; (4) solid pattern with nests and sheets of epithelial cells with scattered small glands; and (5) sex cordlike growth.