introduction
//ˌɪntrəˈdʌkʃən//
Noun
introductionSingular
introductionsPlural
1
The act of presenting one person to another person for the first time
I made the introductions at the party.
2
The opening section of a book, speech, or other work that explains its purpose or scope
The author explains her research methods in the introduction.
3
A person's first experience of something or initial contact with a subject
This book was my introduction to classical music.
4
The action of bringing something into use or existence for the first time
The introduction of new technology changed the way we work.