Definition of premising:
(n) :
A proposition antecedently supposed or proved; something previously stated or assumed as the basis of further argument; a condition; a supposition.
(n) :
(logic) Any of the first propositions of a syllogism, from which the conclusion is deduced.
(n) :
(authorship) The fundamental concept that drives the plot of a film or other story.
(n) :
(usually in the plural, law) Matters previously stated or set forth; especially, that part in the beginning of a deed, the office of which is to express the grantor and grantee, and the land or thing granted or conveyed, and all that precedes the habendum; the thing demised or granted.
(n) :
(usually in the plural) A piece of real estate; a building and its adjuncts.
(v) :
To state or assume something as a proposition to an argument.