gluco-youdaoicibaDictYouDict[gluco- 词源字典]
before vowels, gluc-, word-forming element used since c. 1880s, a later form of glyco-, from Greek glykys "sweet," figuratively "delightful; dear; simple, silly," from *glku-, dissimilated in Greek from PIE root *dlk-u- "sweet" (source also of Latin dulcis). Now usually with reference to glucose.[gluco- etymology, gluco- origin, 英语词源]