bounceyoudaoicibaDictYouDict[bounce 词源字典]
bounce: [13] Bounce is something of a mystery word. When it first appears in Middle English it means ‘hit’, and it does not acquire its modern sense ‘rebound’ until the late 16th century. There are similar words in other Germanic languages, such as Dutch bons ‘thump’, but there is no reason to suppose that any of them is actually the source of the English word. Many etymologists incline to the view that bounce is an independent onomatopoeic formation.
[bounce etymology, bounce origin, 英语词源]
scienceyoudaoicibaDictYouDict
science: [14] Etymologically, science simply means ‘knowledge’, for it comes via Old French science from Latin scientia, a noun formed from the present participle of the verb scīre ‘know’. It early on passed via ‘knowledge gained by study’ to a ‘particular branch of study’, but its modern connotations of technical, mathematical, or broadly ‘non-arts’ studies did not begin to emerge until the 18th century. The derivative scientist was coined in 1840 by William Whewell: ‘We need very much a name to describe a cultivator of science in general. I should incline to call him a Scientist’, Philosophy of the Inductive Sciences 1840.
=> conscious
converge (v.)youdaoicibaDictYouDict
1690s, from Late Latin convergere "to incline together" from com- "together" (see com-) + vergere "to bend" (see verge (v.)). Related: Converged; converging.
physicist (n.)youdaoicibaDictYouDict
1836, from physics + -ist. Coined by the Rev. William Whewell (1794-1866), English polymath, to denote a "cultivator of physics" as opposed to a physician.
As we cannot use physician for a cultivator of physics, I have called him a physicist. We need very much a name to describe a cultivator of science in general. I should incline to call him a Scientist. Thus we might say, that as an Artist is a Musician, Painter, or Poet, a Scientist is a Mathematician, Physicist, or Naturalist. [William Whewell, "The Philosophy of the Inductive Sciences," London, 1840]
propensity (n.)youdaoicibaDictYouDict
1560s, "disposition to favor," with -ty + obsolete adjective propense "inclined, prone" (1520s), from Latin propensus, past participle of propendere "incline to, hang forward, hang down, weigh over," from pro- "forward" (see pro-) + pendere "hang" (see pendant).