Log in to manage your earnings and access Instant Financial's on-demand pay solutions. The meaning of INSTANT is an infinitesimal space of time; especially : a point in time separating two states. How to use instant in a sentence. If you say that something happens at a particular instant, you mean that it happens at exactly the time you have been referring to, and you are usually suggesting that it happens quickly or immediately. noting a food or beverage requiring a minimal amount of time and effort to prepare, as by heating or the addition of milk or water, before being served or used: instant coffee; instant pudding. an infinitesimal or very short space of time; moment. the point of time now present: Come here this instant! Instant definition: A period of time so short as to be almost imperceptible. English dictionary and integrated thesaurus for learners, writers, teachers, and students with advanced, intermediate, and beginner levels. INSTANT definition: an infinitesimal or very short space of time; a moment. See examples of instant used in a sentence.
