in literature, a structural principle, first discussed by Plato (in Phaedrus, Gorgias, and The Republic) and later described and defined by Aristotle. The principle calls for internally consistent thematic and dramatic development, analogous to biological growth, which is the recurrent, guiding metaphor throughout Aristotle's writings. According to his Poetics, the action of a narrative or drama must be presented as “a complete whole, with its several incidents so closely connected that the transposal or withdrawal of any one of them will disjoin and dislocate the whole.” The principle is opposed to the concept of literary genres—standard and conventionalized forms that art must be fitted into. It assumes that art grows from a germ and seeks its own form and that the artist should not interfere with its natural growth by adding ornament, wit, love interest, or some other conventionally expected element.

Organic form was a preoccupation of the German Romantic poets and was also claimed for the novel by Henry James in The Art of Fiction (1884).