[uncountable] building material that is made by mixing together cement, sand, small stones and water a slab of concrete The pathway is formed from large pebbles set in concrete. Oxford Collocations Dictionary adjectivesolid, bare, fresh, … … of concretelayer, slab verb + concretemix, lay, pour, … concrete + verbset concrete + nounblock, slab, building, … See full entry See related entries: Materials and properties Word Originlate Middle English (in the sense ‘solidified’): from French concret or Latin concretus, past participle of concrescere ‘grow together’. The noun sense ‘building material’ dates from the mid 19th cent.Extra examples Before the concrete sets the surface can be given a final smoothing over. I do not regard the constitution of the United Kingdom as set in concrete. I do not regard this plan as set in concrete. a floor made of bare concrete
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