Lemma
From Wikinfo
In mathematics, a lemma expresses a minor theorem, of interest primarily because it serves in the proof of a major result.
In linguistics, and particularly in morphology, a lemma comprises the canonical form of a word. Lemmas have especial significance in highly inflected languages such as Czech.
References
- Adapted from the Wikipedia article, "Lemma" http://en.wikipedia.org/wiki/Lemma, used under the GNU Free Documentation License
