lemmatical Definition

lemma
noun lemmas, lemmata

1. math.
A preliminary proposition, or a premise taken for granted.
2. A heading or outline of an argument in a piece of literary writing.
3. linguistics.
A headword, especially in a dictionary, thesaurus, etc.

Derivative: lemmatical
adj

Etymology: 16c: Greek, in sense 2, from lambanein to take.