1. (noun)introduction, debut, first appearance, launching, unveiling, entry the act of beginning something new "they looked forward to the debut of their new product line"
3. (noun)presentation, introduction, intro formally making a person known to another or to the public
4. (noun)introduction a basic or elementary instructional text
5. (noun)introduction a new proposal "they resisted the introduction of impractical alternatives"
6. (noun)insertion, introduction, intromission the act of putting one thing into another
7. (noun)initiation, founding, foundation, institution, origination, creation, innovation, introduction, instauration the act of starting something for the first time; introducing something new "she looked forward to her initiation as an adult"; "the foundation of a new scientific society"