The American Heritage® Dictionary of the English Language, 4th Edition
n. Philosophy The doctrine, intermediate between nominalism and realism, that universals exist only within the mind and have no external or substantial reality.
n. A school of abstract art or an artistic doctrine that is concerned with the intellectual engagement of the viewer through conveyance of an idea and negation of the importance of the art object itself.
n. A theory, intermediate between realism and nominalism, that the mind has the power of forming for itself general conceptions of individual or single objects.
the GNU version of the Collaborative International Dictionary of English
n. A theory, intermediate between realism and nominalism, that the mind has the power of forming for itself general conceptions of individual or single objects.
The Century Dictionary and Cyclopedia
n. The psychological doctrine that the meaning of a general class-name, as horse, red, etc., can be fully represented in thought or be actually present to consciousness: opposed both to realism and to nominalism.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the doctrine that the application of a general term to various objects indicates the existence of a mental entity that mediates the application
Word Usage
"So we might cautiously admit to the correctness of "conceptualism" -- that anything we say about the objective or real features of the world in inevitably couched within a set of concepts or categories, and there is no uniquely best set of concepts on the basis of which to analyze experience."