(slang, idiomatic) Used to denote that the speaker finds another person sexually attractive.

(idiomatic) Used to express one's understanding of another's position.

Alternative form of PI

(idiomatic, informal) Used to refer back to a previous statement in a discourse

Alternative form of V.I.

(biochemistry) A protein folding initiation site motif consisting of an amino acid sequence pattern and a local structure type.

plural of I²C

(computer hardware, serial bus) Initialism of Inter-Integrated Circuit, a standard for integrated circuit communication using two lines.

information superhighway

(rare) I-hood.