introductory note

noun
UK /ˌɪntrəˈdʌktəri nəʊt/
US /ˌɪntrəˈdʌktəri noʊt/

A short message at the start of a book or document that tells you what it is about.

The author wrote an introductory note to explain why she wrote the book.


OTHER MEANINGS

2. A brief explanation at the beginning of a report or manual that helps readers understand the content.

The manual begins with an introductory note about safety.

3. A short greeting or explanation placed before the main part of a letter or email.

He added an introductory note before listing the meeting details.

4. A preliminary remark that sets the context for a speech or presentation.

Her introductory note thanked the audience for coming.