the act of introducing or the state of being introduced.

a formal personal presentation of one person to another or others.

a preliminary part, as of a book, musical composition, or the like, leading up to the main part.

an elementary treatise

an introduction to botany.

an act or instance of inserting.

something introduced.

noun

conclusion , end , ending , finish

noun

addition , admittance , awakening , baptism , basic principles , basic text , beginning , commencement , debut , essentials , establishment , exordium , first acquaintance , first taste , foreword , inauguration , inception , induction , influx , ingress , initiation , insertion , installation , institution , interpolation , intro , launch , lead , lead-in , opening , opening remarks , overture , pioneering , preamble , preface , preliminaries , prelude , presentation , primer , proem , prolegomenon , prologue , survey , entrance , ingression , intromission , exposition , innovation , interpolation interposition , isagoge , lemma , orientation , prelusion , preparation , prolusion , propaedeutic , protasis , rubric , unveiling