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demesne [demesne 词源字典]: demesne: [14] Ultimately, demesne is the same word as domain. It comes via Old French demeine from Latin dominicus, an adjective meaning ‘of a lord’ (see DOMINION), and hence etymologically means ‘land belonging to a lord’. Under the feudal system it denoted land retained by the lord for his own use, rather than let out to tenants. The -s- was inserted into the word in Anglo-Norman, partly as a graphic device to indicate a long vowel and partly through association with Old French mesnie ‘household’, which came ultimately from Latin mansio ‘place to stay’ (source of English mansion).
=> dame, danger, domain, dominion[demesne etymology, demesne origin, 英语词源]
nemesis: nemesis: see nomad
demesne (n.): c. 1300, demeyne (modern spelling by late 15c.), from Anglo-French demesne, demeine, Old French demaine "land held for a lord's own use," from Latin dominicus "belonging to a master," from dominus "lord." Re-spelled by Anglo-French legal scribes under influence of Old French mesnie "household" (and the concept of a demesne as "land attached to a mansion") and their fondness for inserting -s- before -n-. Essentially the same word as domain.
emesis (n.): "action of vomiting," 1875, medical Latin, from Greek emesis "a vomiting," from emein "to vomit" (see emetic).
nemesis: 1570s, Nemesis, "Greek goddess of vengeance, personification of divine wrath," from Greek nemesis "just indignation, righteous anger," literally "distribution" (of what is due), related to nemein "distribute, allot, apportion one's due," from PIE root *nem- "to divide, distribute, allot, to take" (cognates: Old English, Gothic niman "to take," German nehmen; see nimble). With a lower-case -n-, in the sense of "retributive justice," attested from 1590s. General sense of "anything by which it seems one must be defeated" is 20c.
semester (n.): 1827, from German Semester "half-year course in a university," from Latin semestris, in cursus semestris "course of six months," from semestris, semenstris "of six months, lasting six months, half-yearly, semi-annual," from sex "six" (see six) + mensis "month" (see moon (n.)). Related: Semestral; semestrial.
academese: "The language or writing style of academic scholarship, especially when considered dry or over-complicated", Early 20th cent. From academ- + -ese.
haematemesis: "The vomiting of blood", Early 19th century: from haemato- 'of blood' + Greek emesis 'vomiting'.