lubricant (n.)youdaoicibaDictYouDict[lubricant 词源字典]
1828, probably from lubricant (adj.), or from Latin lubricantem.[lubricant etymology, lubricant origin, 英语词源]
lubricant (adj.)youdaoicibaDictYouDict
"reducing friction," 1809, from Latin lubricantem (nominative lubricans), present participle of lubricare "to make slippery or smooth," from lubricus "slippery; easily moved, sliding, gliding;" figuratively "uncertain, hazardous, dangerous; seductive," from PIE *sleubh- "to slip, slide" (see sleeve).