introduction

US /ˌɪn.trəˈdʌk.ʃən/
UK /ˌɪn.trəˈdʌk.ʃən/
"introduction" picture
1.

the action of introducing something or someone

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The introduction of new technology revolutionized the industry.
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Her introduction to the team was met with enthusiasm.
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inceptioninitiationlaunchdebutpresentation
2.

a preliminary part of a book or other work, stating its purpose, scope, or background

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Read the introduction before starting the main chapters.
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The professor gave a brief introduction to the course.
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prefaceforewordprologuepreambleopening