as soon as, directly.

(communication, computing) A form of realtime communication where two or more people exchange text messages, usually short, using computers or other devices with communications capabilities.

(uncountable) The quality of being unstable. / (physics, countable) A state that is not in equilibrium, or in which a small change has a large irreversible effect.

The velocity of an object at any given instant (especially that of an accelerating object).

(communication, computing) A message conveyed through an instant messaging program.

(communication, computing) To convey a message via an instant messaging program.

One of a series of parts, whether equal or unequal to the other parts of the series, of a given entity or a given process, which part presents or is presented at a particular scheduled interval.

The act of installing; installation. / (obsolete) The seat in which one is placed.

(Australia, Britain, Canada) Alternative spelling of installment

(transitive) To install (someone) in office; to establish.