enchiridion
/ˌenkaɪəˈrɪdɪən/noun
(pl. enchiridions 或 enchiridia /-ˈrɪdɪə/)
- formal a book containing essential information on a subject〈正式〉手册, 指南。
词源
late Middle English: via late Latin from Greek enkheiridion, from en - 'within' + kheir 'hand' + the diminutive suffix -idion.