Real Dictionary

information technology in British English
noun: the technology of the production, storage, and communication of information using computers and microelectronics

it
IT is an abbreviation for information technology.
pronoun: You use it to refer to an object, animal, or other thing that has already been mentioned.

IT in American English
Italian
abbreviation
abbreviation: information technology

it in American English 1
the animal or thing previously mentioned or under discussion: neuter personal pronoun in the third person singular: it is the nominative and objective form, its the possessive, and itself the reflexive and intensive; its is the possessive pronominal adjec
noun: the player called upon to perform some task, as, in tag, the one who must catch the other players
pronoun: (used to represent an inanimate thing understood, previously mentioned, about to be mentioned, or present in the immediate context)

it in American English 2
italic(s)
noun: sweet vermouth

IT in British English
abbreviation for: information technology

it in British English 1
refers to a nonhuman, animal, plant, or inanimate thing, or sometimes to a small baby
noun: (in children's games) the player whose turn it is to try to touch another

it in British English 2
the internet domain name for: Italy

It. in American English
abbreviation: Italian

It. in British English
abbreviation for: Italian