INTRODUCTION
- The bringing of a product, measure, concept, etc., into use or operation for the first time
- The action of bringing a new plant, animal, or disease to a place
- A thing, such as a product, measure, plant, etc., newly brought in
- A formal presentation of one person to another, in which each is told the other's name
- A thing preliminary to something else
- An explanatory section at the beginning of a book, report, etc
- A preliminary section in a piece of music, often thematically different from the main section
- A book or course of study intended to introduce a subject to a person
- A person's first experience of a subject or thing
- a part of a book or treatise preliminary to the main portion [n -S]