set/cast in concrete, to put (something) in final form; finalize so as to prevent change or reversal: The basic agreement sets in concrete certain policies.

Origin of concrete

1375–1425; late Middle English concret < Latin concrētus (past participle of concrēscere to grow together), equivalent to con- con- + crē- (stem of crēscere to grow, increase; see -esce) + -tus past participle ending
Related formscon·crete·ly, adverbcon·crete·ness, nouncon·cre·tive, adjectivecon·cre·tive·ly, adverbun·con·crete, adjectiveun·con·crete·ly, adverbun·con·cret·ed, adjective
Can be confusedcement concrete mortar2

Synonyms for concrete

Antonyms for concrete

1, 2. abstract. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for concrete

Contemporary Examples of concrete

Historical Examples of concrete

British Dictionary definitions for concrete



  1. a construction material made of a mixture of cement, sand, stone, and water that hardens to a stonelike mass
  2. (as modifier)a concrete slab
physics a rigid mass formed by the coalescence of separate particles


relating to a particular instance or object; specific as opposed to generala concrete example
  1. relating to or characteristic of things capable of being perceived by the senses, as opposed to abstractions
  2. (as noun)the concrete
formed by the coalescence of particles; condensed; solid


(tr) to construct in or cover with concrete
(kənˈkriːt) to become or cause to become solid; coalesce
Derived Formsconcretely, adverbconcreteness, nounconcretive, adjectiveconcretively, adverb

Word Origin for concrete

C14: from Latin concrētus grown together, hardened, from concrēscere; see concrescence
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for concrete

late 14c., "actual, solid," from Latin concretus "condensed, hardened, thick, hard, stiff, curdled, congealed, clotted," figuratively "thick; dim," literally "grown together;" past participle of concrescere "to grow together," from com- "together" (see com-) + crescere "to grow" (see crescent). A logicians' term until meaning began to expand 1600s. Noun sense of "building material made from cement, etc." is first recorded 1834.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for concrete


[kŏn-krēt, kŏnkrēt′]


Relating to an actual, specific thing or instance; particular.
Existing in reality or in real experience; perceptible by the senses; real.
Relating to a material thing or group of things as opposed to an abstraction.
Formed by the coalescence of separate particles or parts into one mass; solid.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.