Definition of "premiss"

premiss

noun
plural premisses
1. Alternative spelling of premise
  Quotations
  […] that he might have no excuse for evading the test, the Franciscan declared himself willing to be a victim to this high logic, and to be burned for the sake of securing the necessary minor premiss.
  1863, George Eliot, Romola, Volume III, Book III, Chapter XVII, page 173
verb
third-person singular simple present premisses, present participle premissing, simple past and past participle premissed
1. Alternative spelling of premise