Pronunciation: (mod"u-fi-kā'shun),[key] —n. 1. an act or instance of modifying.
2. the state of being modified; partial alteration.
3. a modified form; variety.
4. Biol.a change in a living organism acquired from its own activity or environment and not transmitted to its descendants.
5. limitation or qualification.
6. Gram. a. the use of a modifier in a construction, or of modifiers in a class of constructions or in a language.
b. the meaning of a modifier, esp. as it affects the meaning of the word or other form modified: Limitation is one kind of modification. c. a change in the phonological shape of a morpheme, word, or other form when it functions as an element in a construction, as the change of not to -n't in doesn't. d. an adjustment in the form of a word as it passes from one language to another.