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from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Of or relating to an actual, specific thing or instance; particular: had the concrete evidence needed to convict.
  • adj. Existing in reality or in real experience; perceptible by the senses; real: concrete objects such as trees.
  • adj. Formed by the coalescence of separate particles or parts into one mass; solid.
  • adj. Made of hard, strong, conglomerate construction material.
  • n. A hard, strong construction material consisting of sand, conglomerate gravel, pebbles, broken stone, or slag in a mortar or cement matrix.
  • n. A mass formed by the coalescence of particles.
  • transitive v. To build, treat, or cover with hard, strong conglomerate construction material.
  • transitive v. To form into a mass by coalescence or cohesion of particles or parts.
  • intransitive v. To harden; solidify.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Particular, perceivable, real.
  • adj. Not abstract.
  • adj. Made of concrete building material.
  • n. A building material created by mixing Portland cement, water, and aggregate including gravel and sand.
  • n. A solid mass formed by the coalescence of separate particles.
  • n. A dessert of frozen custard with various toppings.
  • v. To cover with or encase in concrete; often constructed as concrete over.
  • v. To solidify.

from the GNU version of the Collaborative International Dictionary of English

  • adj. United in growth; hence, formed by coalition of separate particles into one mass; united in a solid form.
  • adj.
  • adj. Standing for an object as it exists in nature, invested with all its qualities, as distinguished from standing for an attribute of an object; -- opposed to abstract.
  • adj. Applied to a specific object; special; particular; -- opposed to general. See Abstract, 3.
  • n. A compound or mass formed by concretion, spontaneous union, or coalescence of separate particles of matter in one body.
  • n. A mixture of gravel, pebbles, or broken stone with cement or with tar, etc., used for sidewalks, roadways, foundations, etc., and esp. for submarine structures.
  • n. A term designating both a quality and the subject in which it exists; a concrete term.
  • n. Sugar boiled down from cane juice to a solid mass.
  • intransitive v. To unite or coalesce, as separate particles, into a mass or solid body.
  • transitive v. To form into a mass, as by the cohesion or coalescence of separate particles.
  • transitive v. To cover with, or form of, concrete, as a pavement.

from The Century Dictionary and Cyclopedia

  • Formed by coalescence of separate particles or constituents; forming a mass; united in a coagulated, condensed, or solid state.
  • In logic, considered as invested with the accidents of matter; particular; individual: opposed to abstract.
  • Bunyan is almost the only writer who ever gave to the abstract the interest of the concrete.
  • In music, melodically unbroken; without skips or distinct steps in passing from one pitch to another.
  • Consisting of concrete: as, a concrete pavement.
  • n. A mass formed by concretion or coalescence of separate particles of matter in one body.
  • n. In grammar and logic, a concrete noun; a particular, individual term; especially, a class-name or proper name.
  • n. A compact mass of sand, gravel, coarse pebbles, or stone chippings cemented together by hydraulic or other mortar, or by asphalt or refuse tar.
  • n. Sugar which has been reduced to a solid mass by evaporation in a concretor.
  • To unite or coalesce into a mass or solid body; form concretions; coagulate; congeal; clot.
  • To form into a mass, as separate particles, by cohesion or coalescence.
  • To combine so as to form a concrete notion.
  • In botany, growing together.
  • To treat or lay with concrete: as, to concrete the foundations of a building; to concrete a cellar floor, or a sidewalk.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. cover with cement
  • n. a strong hard building material composed of sand and gravel and cement and water
  • adj. capable of being perceived by the senses; not abstract or imaginary
  • adj. formed by the coalescence of particles
  • v. form into a solid mass; coalesce


Middle English concret, from Latin concrētus, past participle of concrēscere, to grow together, harden : com-, com- + crēscere, to grow; see ker-2 in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin concretus, past participle of concrescere (com- + crescere). (Wiktionary)


  • Set in concrete is a brass channel indicating the precise position and angle of said line (and there's one that runs across the pavement in Lewes outside the Shepherd Neame pub the name of which escapes me).

    Village of Mystery

  • The term concrete anchor refers to a heavy duty type of anchor that is usually of a larger diameter.


  • But I don't know when they will stop - since the concrete is all under the roof, I wonder if they're playing Jenga with their house.

    On a no-longer quiet summery Saturday

  • He did say that he hopes to have some what he called concrete proposals to deal with this issue out there in the next couple of weeks.

    CNN Transcript Mar 12, 2009

  • But Lou, Timothy Geithner did announce that he would offer some what he called concrete steps to address those issues in the next couple of weeks.

    CNN Transcript Mar 12, 2009

  • So if the concrete is at a fairly low temperature, and the environment around it contains warmer air with a lot of water vapor, that vapor can condense on the concrete.


  • Yet when what appears to be a key part of the early surge strategy -- is the erection of this, what you called a concrete caterpillar, the 12-foot wall to separate Sunni and Shia ...

    CNN Transcript Apr 26, 2007

  • North Korea has agreed to return to talks over its nuclear program, but the U.S. wants North Korea to take what it calls concrete first steps.

    CNN Transcript Nov 18, 2006

  • North Korea has agreed to return to talks over its nuclear program, but the U.S. wants the North to take what it calls concrete steps first.

    CNN Transcript Nov 18, 2006

  • Unquestionably, also, it felt that this philosophy ought to establish itself in what we call concrete duration.

    Evolution créatrice. English


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  • Right on, Yarb. I should have added that to my comment. Thanks for clarifying it.

    December 13, 2009

  • First syllable stress for the noun, second for the adjective, either for the verb.

    December 12, 2009

  • Your pronunciation stresses the second syllable, but my Random House Dictionary (first edition) stresses the first as preferable.

    December 12, 2009

  • "The Concrete Centre was formed to fill a void in the marketing of concrete."

    January 24, 2009