introduction
in-tro-duc-tion
noun
The opening section of a book, speech, or piece of music.
"Read the introduction before chapter one."
noun
The act of formally presenting one person to another.
"He made the introductions at the party."
noun
The act of bringing something new into use or existence.
"The introduction of new technology improved efficiency."
Thesaurus
Synonyms: instauration, institution, innovation, origination, founding, initiation, foundation, creation, debut, entry, launching, first appearance