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The American Heritage Dictionary of the English Language
con┬╖crete (k┼Пn-kr─Уt', k┼Пng-, k┼Пn'kr─Уt', k┼Пng'-)
adj. Of or relating to an actual, specific thing or instance; particular: had the concrete evidence needed to convict. Existing in reality or in real experience; perceptible by the senses; real: concrete objects such as trees.
Formed by the coalescence of separate particles or parts into one mass; solid. Made of hard, strong, conglomerate construction material.
n. (k┼Пn'kr─Уt', k┼Пng'-, k┼Пn-kr─Уt', k┼Пng-)
A hard, strong construction material consisting of sand, conglomerate gravel, pebbles, broken stone, or slag in a mortar or cement matrix. A mass formed by the coalescence of particles.
v. (k┼Пn'kr─Уt', k┼Пng'-, k┼Пn-kr─Уt', k┼Пng-) con┬╖cret┬╖ed, con┬╖cret┬╖ing, con┬╖cretes
v. tr. To build, treat, or cover with hard, strong conglomerate construction material. To form into a mass by coalescence or cohesion of particles or parts.
v. intr. To harden; solidify.
[Middle English concret, from Latin concr─Уtus, past participle of concr─Уscere, to grow together, harden : com-, com- + cr─Уscere, to grow; see ker-2 in Indo-European roots.]
con┬╖crete'ly adv., con┬╖crete'ness n.