concave (adj.)youdaoicibaDictYouDict[concave 词源字典]
early 15c., from Old French concave (14c.) or directly from Latin concavus "hollow, arched, vaulted, curved," from com-, intensive prefix (see com-), + cavus "hollow" (see cave (n.)).[concave etymology, concave origin, 英语词源]
concavity (n.)youdaoicibaDictYouDict
c. 1400, from Old French concavité "hollow, concavity" (14c.) or directly from Latin concavitatem (nominative concavitas), from Latin concavus "hollow" (see concave).
conceal (v.)youdaoicibaDictYouDict
early 14c., concelen, from Old French conceler "to hide, conceal, dissimulate," from Latin concelare "to hide," from com-, intensive prefix (see com-), + celare "to hide," from PIE root *kel- (2) "to cover, conceal" (see cell). Replaced Old English deagan. Related: Concealed; concealing.
concealment (n.)youdaoicibaDictYouDict
early 14c. (late 13c. in Anglo-French), from Old French concelement "concealment, secrecy," from conceler "to hide" (see conceal). Originally a term in law; general sense is from c. 1600.
concede (v.)youdaoicibaDictYouDict
1630s, from Middle French concéder or directly from Latin concedere "give way, yield, go away, depart, retire," figuratively "agree, consent, give precedence," from com-, intensive prefix (see com-), + cedere "to go, grant, give way" (see cede). Related: Conceded; conceding.
conceit (n.)youdaoicibaDictYouDict
late 14c., "something formed in the mind, thought, notion," from conceiven (see conceive) based on analogy of deceit and receipt. Sense evolved from "something formed in the mind," to "fanciful or witty notion" (1510s), to "vanity" (c. 1600) through shortening of self-conceit (1580s).
conceited (adj.)youdaoicibaDictYouDict
c. 1600, "having an overweening opinion of oneself" (short for self-conceited, 1590s); earlier "having intelligence" (1540s); past participle adjective from conceit (q.v.).
conceivable (adj.)youdaoicibaDictYouDict
mid-15c. (implied in conceivableness), from conceive + -able. Originally in a now-obsolete sense "that can be received." Meaning "that can be imagined" is attested from 1620s (in conceivably).
conceive (v.)youdaoicibaDictYouDict
late 13c., conceiven, "take (seed) into the womb, become pregnant," from stem of Old French conceveir (Modern French concevoir), from Latin concipere (past participle conceptus) "to take in and hold; become pregnant," from com-, intensive prefix (see com-), + comb. form of capere "to take," from PIE *kap- "to grasp" (see capable). Meaning "take into the mind" is from mid-14c., a figurative sense also found in the Old French and Latin words. Related: Conceived; conceiving.
concent (n.)youdaoicibaDictYouDict
"harmony," 1580s, from Latin concentus "a singing together, harmony," from concinere "to sing or sound together," from com- "with, together" (see com-) + canere "to sing" (see chant (v.)). Often misspelled consent or confused with that word.
concentrate (v.)youdaoicibaDictYouDict
1630s, "to bring or come to a common center," from concenter (1590s), from Italian concentrare, from Latin com- "together" (see com-) + centrum "center" (see center (n.)). Meaning "condense" is from 1680s. Sense of "mentally focus" is c. 1860. Related: Concentrated; concentrating.
concentrate (n.)youdaoicibaDictYouDict
1883, from concentrate (v.).
concentration (n.)youdaoicibaDictYouDict
1630s, "action of bringing to a center," noun of action from verb concentrate (v.). Meaning "a mass so collected" is from 1670s; "continuous focus of mental activity" is from 1846.
concentration camp (n.)youdaoicibaDictYouDict
1901, "compound for noncombatants in a war zone" (see concentration); a term for a controversial idea in the second Boer War (1899-1902), and the term emerged with a bad odor.
The concentration camp now definitely taken its place side by side with Black Hole of Calcutta as one of those of horror at which humanity will never cease shudder. ["The Review of Reviews," London, March 1902]
It also was used 1902 in reference to then-current U.S. policies in the Philippines, and retroactively in reference to Spanish policies in Cuba during the insurrection there of 1896-98. The phrase was used in U.S. during the Spanish-American war, but in reference to designated rendezvous points for U.S. troops headed overseas. In reference to prisons for dissidents and minorities in Nazi Germany from 1934, in Soviet Russia from 1935.
concentric (adj.)youdaoicibaDictYouDict
c. 1400, from Middle French concentrique, from Medieval Latin concentricus, from com- "together" (see com-) + centrum "circle, center" (see center (n.)).
concept (n.)youdaoicibaDictYouDict
1550s, from Medieval Latin conceptum "draft, abstract," in classical Latin "(a thing) conceived," from concep-, past participle stem of concipere "to take in" (see conceive). In some 16c. cases a refashioning of conceit (perhaps to avoid negative connotations).
conception (n.)youdaoicibaDictYouDict
early 14c., "act of conceiving," from Old French concepcion (Modern French conception) "conception, grasp, comprehension," from Latin conceptionem (nominative conceptio) "a comprehending, conception," noun of action from stem of concipere (see conceive). Originally in the womb sense (also with reference to Conception Day in the Church calendar); mental sense "process of forming concepts" is late 14c. Meaning "that which is conceived in the mind" is from 1520s; "general notion" is from 1785.
conceptive (adj.)youdaoicibaDictYouDict
1630s, from Latin conceptivus, from conceptus, past participle of concipere (see conceive).
conceptual (adj.)youdaoicibaDictYouDict
1820, "pertaining to mental conception" (there is an isolated use from 1662), from Medieval Latin conceptualis, from Latin conceptus "a collecting, gathering, conceiving," past participle of concipere (see conceive). Related: Conceptualism; conceptualist.
conceptualisation (n.)youdaoicibaDictYouDict
chiefly British English spelling of conceptualization; for spelling, see -ize.