Answer: introduction

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