1. (

• origin ,
• origination ,
• inception

) an event that is a beginning; a first part or stage of subsequent events ;

2. (

• 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" ;