1.the first section of a communication
2.the act of beginning something new;
they looked forward to the debut of their new product line
3.formally making a person known to another or to the public
4.a basic or elementary instructional text
5.a new proposal;
they resisted the introduction of impractical alternatives
6.the act of putting one thing into another
7.the act of starting something for the first time; introducing something new;
she looked forward to her initiation as an adult