officinal (adj.)youdaoicibaDictYouDict[officinal 词源字典]
"kept in stock by a druggist," c. 1720, from French officinal, from Medieval Latin officinalis, literally "of or belonging in an officina," a storeroom (of a monastery) for medicines and necessaries, in classical Latin "workshop, manufactory, laboratory," contraction of *opificina, from opifex (genitive opificis) "worker, workman, maker, doer" (from opus "work;" see opus) + -fex, -ficis "one who does," from facere "to make, do, perform" (see factitious). Related: Officinally.[officinal etymology, officinal origin, 英语词源]
portmanteau (n.)youdaoicibaDictYouDict
1580s, "traveling case or bag for clothes and other necessaries," from Middle French portemanteau "traveling bag," originally "court official who carried a prince's mantle" (1540s), from porte, imperative of porter "to carry" (see porter (n.1)) + manteau "cloak" (see mantle (n.)).

Portmanteau word "word blending the sound of two different words" (1882), coined by "Lewis Carroll" (Charles L. Dodgson, 1832-1898) for the sort of words he invented for "Jabberwocky," on notion of "two meanings packed up into one word." As a noun in this sense from 1872.