reduplication

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. The act of reduplicating or the state of being reduplicated.
2. n. The product or result of reduplicating.
3. n. Linguistics A word formed by or containing a reduplicated element.
4. n. Linguistics The added element in a word form that is reduplicated.

Century Dictionary and Cyclopedia

1. n. The act of reduplicating, redoubling, or repeating, or the state of being reduplicated.
2. n. In rhetoric, a figure in which a verse ends with the same word with which the following begins.
3. n. In philol.:
4. n. The repetition of a syllable (usually a root-syllable), or of the initial part, often with more or less modification, in various processes of word-formation and inflection. In our languages, it is especially the perfect tense that exhibits reduplication: thus, Gothic haihald, Latin cecini, Greek πέφευγα, Sanskrit babhāra; but also the present tense: thus. Latin sisto, Greek δίδωμι, Sanskrit dadāmi, etc.; and elsewhere.
5. n. The new syllable formed by reduplication.
6. n. In logic, an expression affixed to the subject of a proposition, showing the formal cause of its possession of the predicate: as, “man, as an animal, has a stomach,” where the expression “as an animal” is the reduplication.
7. n. In anatomy and zoology, a folding of a part; a folded part; a fold or duplication, as of a membrane, of the skin, etc. Also reduplicature.
8. n. In pathology, the repetition of the sequence of symptoms in a case of intermittent malarial fever of double type.
9. n. In mech., the principle, in a cord-and-pulley, that the greater the number of turns of the rope in the pulleys, the greater the load that can be lifted by a given pull on the hauling-rope.

Wiktionary

1. n. linguistics The act of, or an instance of, reduplicating.

GNU Webster's 1913

1. n. The act of doubling, or the state of being doubled.
2. n. (Pros.) A figure in which the first word of a verse is the same as the last word of the preceding verse.
3. n. (Philol.) The doubling of a stem or syllable (more or less modified), with the effect of changing the time expressed, intensifying the meaning, or making the word more imitative; also, the syllable thus added.

WordNet 3.0

1. n. repetition of the final words of a sentence or line at the beginning of the next
2. n. a word formed by or containing a repeated syllable or speech sound (usually at the beginning of the word)
3. n. the syllable added in a reduplicated word form
4. n. the act of repeating over and again (or an instance thereof)