Word forms: premises language note: The spelling premiss is also used in British English for meaning [sense 2]. The premises of a business or an institution are all the buildings and land that it occupies in one place. There is a kitchen on the premises.

A premise or premiss is a proposition—a true or false declarative statement—used in an argument to prove the truth of another proposition called the conclusion. Arguments consist of a set of premises and a conclusion. An argument is meaningful for its conclusion only when all of its premises are true.

Premises: The premises (and there can be more than one) are the statements being offered in support for the conclusion. The premises also embody the reasons or facts providing evidence for the conclusion's credibility.

assertion, assumption, basis, ground, presumption, proposition, thesis.