exposition
ex.po.si.tion \.ek-sp*-'zish-*n\ \-'zish-n*l, -*n-*l\ n 1: a setting forth of the meaning or purpose (as of a writing) 2a: discourse or an example of it designed to convey information or explain what is difficult to understand 2b1: the first part of a musical composition in sonata form 2b2: the opening section of a fugue 3: an act or an instance of exposing : as 3a: abandonment of an infant 3b: a public exhibition or show - ex.po.si.tion.al aj