A pretty basic term, but one that can be important to use appropriately.
The time from the RFP being issued to when the proposal is due. In government contracting, usually stipulated as the number of days that amount to one of the more-or-less standard response periods: four, six, eight, or twelve weeks. In capital procurements requiring a major design effort (think trains, ships, …
Explanation of this critical element in every RFP.
Pronounced by spelling it out, RFx is shorthand for all the procurement vehicles:
Defining RFP: one of a series of widely used terms in RFPs and RFP responses.