introduction in WordNet English dictionary

1. 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"
   initiation  founding  foundation  institution  origination  creation  innovation  introduction  instauration 
   
2. the act of beginning something new
   "they looked forward to the debut of their new product line"
   introduction  debut  first appearance  launching  unveiling  entry 
   
3. the act of putting one thing into another
   insertion  introduction  intromission 
   
4. formally making a person known to another or to the public
   presentation  introduction  intro 
   
5. the first section of a communication
   introduction 
   
6. a basic or elementary instructional text
   introduction 
   
7. a new proposal
   "they resisted the introduction of impractical alternatives"
   introduction