autoclave (n.)youdaoicibaDictYouDict[autoclave 词源字典]
1880, from French, literally "self-locking," from auto- "self" (see auto-) + Latin clavis "key" (see slot (n.2)).[autoclave etymology, autoclave origin, 英语词源]
autocracy (n.)youdaoicibaDictYouDict
1650s, "independent power, self-sustained power," from French autocratie, from Greek autokrateia "ruling by oneself," noun of state from autokrates (see autocrat). Meaning "absolute government, supreme political power" is recorded from 1855.
autocrat (n.)youdaoicibaDictYouDict
1803, from French autocrate, from Greek autokrates "ruling by oneself, absolute, autocratic," from autos- "self" (see auto-) + kratia "rule," from kratos "strength, power" (see -cracy). First used by Robert Southey, with reference to Napoleon. An earlier form was autocrator (1789), used in reference to the Russian Czars. Earliest form in English is the fem. autocratress (1762).
autocratic (adj.)youdaoicibaDictYouDict
1823, from French autocratique, from autocrate, from Greek autokrates (see autocrat). Earlier autocratoric (1670s) was directly from Greek autokratorikos. Autocratical is attested from 1801.
autodidact (n.)youdaoicibaDictYouDict
1746, from Greek autodidaktos "self-taught" (see autodidactic).
autodidactic (adj.)youdaoicibaDictYouDict
"self-taught," 1838, from Greek autodidaktikos "self-taught," from autos "self" (see auto-) + didaktos "taught" (see didactic).
autogenous (adj.)youdaoicibaDictYouDict
"self-generated," 1846, earlier autogeneal (1650s), from Greek autogenes "self-produced," from autos "self" (see auto-) + genes "formation, creation" (see genus). Modern form and biological use of the word said to have been coined by English paleontologist Richard Owen (1804-1892).
autograph (n.)youdaoicibaDictYouDict
"a person's signature," 1791, from Latin autographum, from Greek autographon, neuter of autographos "written with one's own hand," from autos- "self" (see auto-) + graphein "to write" (originally "to scratch;" see -graphy). Used earlier (1640s) to mean "author's own manuscript."
autograph (v.)youdaoicibaDictYouDict
"to sign one's name," 1837, from autograph (n.). Related: Autographed; autographing. Earlier "to write with one's own hand" (1818).
autoharp (n.)youdaoicibaDictYouDict
1882, name on a patent taken out by Charles F. Zimmermann of Philadelphia, U.S.A., for an improved type of harp, an instrument considerably different from the modern autoharp, actually a chord zither, which was invented about the same time by K.A. Gütter of Markneukirchen, Germany, who called it a Volkszither.
autoimmune (adj.)youdaoicibaDictYouDict
1952, from auto- + immune.
autolatry (n.)youdaoicibaDictYouDict
"self-worship," 1620s (in Latinate form autolatria), from auto- + -latry.
automaker (n.)youdaoicibaDictYouDict
"manufacturer of automobiles," 1925, from auto + maker.
automat (n.)youdaoicibaDictYouDict
"automated cafeteria," 1903, probably from automatic.
automate (v.)youdaoicibaDictYouDict
"to convert to automatic operation," 1954, back-formation from automated (q.v.). Ancient Greek verb automatizein meant "to act of oneself, to act unadvisedly." Related: Automating.
automated (adj.)youdaoicibaDictYouDict
1952, American English, adjective based on automation.
automatic (adj.)youdaoicibaDictYouDict
"self-acting, moving or acting on its own," 1812, from Greek automatos, used of the gates of Olympus and the tripods of Hephaestus (also "without apparent cause, by accident"), from autos "self" (see auto-) + matos "thinking, animated" (see automaton). Of involuntary animal or human actions, from 1748, first used in this sense by English physician and philosopher David Hartley (1705-1757). In reference to a type of firearm, from 1877; specifically of machinery that imitates human-directed action from 1940.
automatic (n.)youdaoicibaDictYouDict
"automatic weapon," 1902, from automatic (adj.). Meaning "motorized vehicle with automatic transmission" is from 1949.
automatically (adv.)youdaoicibaDictYouDict
1834, "involuntarily, unconsciously;" see automatic + -ly (2).
automation (n.)youdaoicibaDictYouDict
1948, in the manufacturing sense, coined by Ford Motor Co. Vice President Delmar S. Harder, from automatic + -ion. Earlier (1838) was automatism, which meant "quality of being automatic" in the classical sense.