dextrose (n.)youdaoicibaDictYouDict[dextrose 词源字典]
1867, shortened from dextro-glucose, from dextro- "right" + -ose (2), chemical suffix indicating a sugar. So called because this form of glucose polarizes light to the right in spectroscopy.[dextrose etymology, dextrose origin, 英语词源]
spectroscope (n.)youdaoicibaDictYouDict
1861, from spectro- + -scope. A Greek-Latin hybrid, both elements from the same PIE root. Related: Spectroscopic; spectroscopy.