introduction

introduction /ˌɪntrəˈdʌkʃən/ noun
plural introductions
introduction
/ˌɪntrəˈdʌkʃən/
noun
plural introductions
Britannica Dictionary definition of INTRODUCTION
1 
[count] : the act of making a person known to others by name — usually plural
2 
[noncount] : the act of introducing something: such as
a  : the act of bringing something into practice or use for the first time
b  : the act of making a product available for sale for the first time
c  : the act of presenting something for discussion or consideration
d  : the act of bringing something (such as a plant or animal) to a place for the first time
3 
[count] : a statement made to an audience about someone who is about to speak, perform, etc., or something that is about to begin
◊ A person who needs no introduction is well-known to the audience.
4 
[count]
a  : the beginning part of a book, essay, speech, etc., that explains what will follow in the main part
b  : the beginning part of a piece of music
5 
[count] : something (such as a book or a course of study) that provides basic information about a subject — + to
6 
[singular] : a person's first experience with something — + to
7 
[count] : something that is added or introduced to something else