- introduction
- late 14c., from O.Fr. introduction, from L. introductionem (nom. introductio) "a leading in," from introductus, pp. of introducere "to lead in, bring in, to introduce," from intro- "inward, to the inside" + ducere "to lead" (see duke). The sense of "formal presentation of one person to another" is from 1711. Shortened form intro is attested from 1923.