duodenumyoudaoicibaDictYouDict[duodenum 词源字典]
duodenum: [14] The term duodenum, for the first part of the small intestine, originated as a measure of length. It comes from the medieval Latin phrase intestinum duodēnum digitōrum ‘intestine of twelve digits’ – that is, twelve finger-breadths long, or just over 20 centimetres. Latin duodēnī meant literally ‘twelve each’; it was a derivative of duodecim ‘twelve’ (source also of English dozen).
=> dozen[duodenum etymology, duodenum origin, 英语词源]
centimeter (n.)youdaoicibaDictYouDict
also centimetre, 1801, from French centimètre (18c.), coined from Latin centum "hundred" (see hundred) + French mètre (see meter (n.2)).
photyoudaoicibaDictYouDict
"A unit of illumination equal to one lumen per square centimetre", Early 20th century: from Greek phōs, phōt- 'light'.