introduction

noun

1. the act of beginning something new"they looked forward to the debut of their new product line"
2. the first section of a communication
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"