Dif·fer·en·ti-ā′tion, n.

(-shī-ā′shun), n.

1. (Logic.) The act of distinguishing or describing a thing, by giving its differentia, or specific difference; exact definition or determination.
2. (Math.) The act or process of differentiating.
3. (Physiol.) The production of a diversity of parts by a process of evolution or development, as, when the seed develops the root and the stem, the initial stem develops the leaf, branches, and flower-buds, &c. So in animal life, the germ evolves the digestive and other organs and members.