Lemma

Webster's Dictionary of the English Language

·noun A preliminary or auxiliary proposition demonstrated or accepted for immediate use in the demonstration of some other proposition, as in mathematics or logic.

Related Words

lemma
lemma, ătis, n., = λῆμμα, a subject for consideration or explanation, a theme, matter, subject, cont...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.