glossary (n.)youdaoicibaDictYouDict[glossary 词源字典]
"collected explanations of words (especially those not in ordinary use), a book of glosses," mid-14c., from Latin glossarium "collection of glosses," from Greek glossarion, diminutive of glossa "obsolete or foreign word" (see gloss (n.2)). Related: Glossarial.[glossary etymology, glossary origin, 英语词源]