prothalamion (n.)youdaoicibaDictgodict[prothalamion 词源字典]
"song sung before a wedding," 1590s, coined as a poem title by Edmund Spenser (based on epithalamion) from Greek pro- "before" (see pro-) + thalamos "bridal chamber" (see thalamus). Sometimes Latinized as prothalamium.[prothalamion etymology, prothalamion origin, 英语词源]