Wikipedia: Concrete

Difference (from prior major revision) (minor diff, author diff)

Removed: 3,4d2

Confusingly, philosophers sometimes refer to trope?s, or property-instances (e.g., the particular redness of this particular apple), as '[abstract particular]?s'.

Changed: 7c5

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In construction? Concrete is a building material made from sand? or other small stones, water, and cement. After mixing the cement hydrates and eventually dries out into a stone. Concrete was invented in the Roman Empire, but the knowledge of its making was lost, to be reinvented only in modern times.

Changed: 9c7

Concrete is a building material made from sand, water, and limestone that in a mostly liquid form and that eventually dries out into a stone.

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Something is concrete if it is not abstract: it is both particular and an individual, and (hence?) occupies some space and time. To say that a physical object is concrete is to say, approximately, that it is a particular individual that is located at a particular place and time.

See particular; individual; abstract.

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