I. “+ noun
Etymology: pre- + condition (n.)
: something that must exist before something else can come about : condition , prerequisite , qualification
prepared to negotiate … without any preconditions — New York Times
the indispensable precondition of success, the support of a united party — M.W.Straight
II. transitive verb
Etymology: pre- + condition (v.)
1. : to put (a thing) in proper or desired condition in advance or in preparation for some intended treatment or processing
precondition the surface of the mineral to be separated — Science
2. : to put (a person) in preparation for some argumentative presentation or some mental test or shock
merchandisers were seeking ways to precondition the customer to buy their product — Vance Packard