concrete (redirected from C20 (engineering))

con·crete (kn-krt, knkrt)

adj.

1. Relating to an actual, specific thing or instance; particular.

2. Existing in reality or in real experience; perceptible by the senses; real.

3. Relating to a material thing or group of things as opposed to an abstraction.

4. Formed by the coalescence of separate particles or parts into one mass; solid.

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concrete (kängˑ·krētˈ),

n solid or semi-solid plant extract obtained by washing with an organic solvent, such as hexane. It has a fatty or waxy consistency and comprises pigments, wax, and essential oils.

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concrete

mixture of cement and reinforcing gravel or stones used in the surfacing of yards, passageways, milking parlors and the like; critical to the good condition of feet and hooves of farm livestock. Excessive wear due to a too-abrasive surface causes footrot of pigs and epidemic lameness in dairy herds.