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.

Applied to a specific object; special; particular; -- opposed to general. See Abstract, 3.

the opposite of abstract - a concrete class is defined in enough detail so that objects can be constructed for it.

adj. real or specific; not imaginary or general; opposite of abstract.

Naming a thing rather than a quality, state or action, not abstract; characterised by belonging to immediate experience of actual things or events relating to a particular instance; specific as opposed to general; relating to things capable of being perceived by the senses, as opposed to abstractions.

capable of being perceived by the senses; not abstract or imaginary; "concrete objects such as trees"

Concrete: See abstract.

See abstract. Conflict

a real instance, not abstract

A material object or specific tangible detail, rather than an abstract state, quality, or generality. A concrete description is one that contains specific details that the reader can easily visualize or imagine.

Used to describe a class which implements the behaviour defined by an abstract class. See also: abstract

In philosophy, a concept is considered concrete if it is not abstract: it must be both particular and an individual, and hence occupy both 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.