The act or process of putting in; infusion.

That which is put in, as in an amount.

Contribution of work or information, as an opinion or advice.

Data fed into a process with the intention of it shaping or affecting the output of that process.

(electronics) An input jack.

(transitive) To put in; put on.

(transitive) To enter data.

(transitive) To accept data that is entered.