名詞 prolusion:

1. a short introductory essay preceding the text of a book
   同義詞：foreword, preface
2. exercising in preparation for strenuous activity
   同義詞：warm-up, tune-up

pro.lu.sion

n.（名詞）
A preliminary exercise.
預演：預先的訓練；演習
An essay written as a preface to a more detailed work.
序言：作為更為詳細的作品的序言而寫的文章

來源：
Latin prôlôsiô prôlôsiôn-
拉丁語 prôlôsiô prôlôsiôn-
from prôlôsus [past participle of] prôlôdere [to practice beforehand]
源自 prôlôsus [] prôlôdere的過去分詞 [預先演習]
prô- [before] * see pro-
prô- [在…之前] *參見 pro-
lôdere [to play] * see leid-
lôdere [游戲，做] *參見 leid-

【引伸】
prolu.sory