Real Dictionary

gestalt
singular noun: In psychology, a gestalt is something that has particular qualities when you consider it as a whole which are not obvious when you consider only the separate parts of it.

gestalt in American English
in Gestalt psychology, any of the integrated structures or patterns that make up all experience and have specific properties which can neither be derived from the elements of the whole nor considered simply as the sum of these elements
noun: a configuration, pattern, or organized field having specific properties that cannot be derived from the summation of its component parts; a unified whole

Gestalt in British English
noun: a perceptual pattern or structure possessing qualities as a whole that cannot be described merely as a sum of its parts