| 单词 | red precipitate |
| 释义 | > as lemmasred precipitate red precipitate n. (more fully red precipitate of mercury) [after French mercure precipité rouge red precipitate of mercury (1675 in the source translated in quot. 1676); compare post-classical Latin praecipitatus ruber (1687), mercurius praecipitatus ruber (1722 or earlier)] Chemistry and Medicine (now historical) a red crystalline form of mercuric oxide, HgO, prepared by heating a solution of mercuric nitrate and formerly used medicinally, esp. in ointments for the treatment of chancre and various skin diseases.Quot. 1654 contains a pun on precipitate adj. ΘΚΠ the world > matter > chemistry > elements and compounds > metals > specific elements > mercury > [noun] > compounds sublimate1543 precipitate1563 red mercury1582 quicksilver extinct1610 red precipitate1676 mercury fulminate1904 methylmercury1915 mercurochrome1919 mercurial1971 1654 M. Stevenson Occasions Off-spring 31 In Mercurie as Chymick tearmes will ha't, The white's sublime, The red precipitate.] 1676 W. Harris tr. N. de Blégny New & Curious Observ. Venereal Dis. ii. i. 60 They who follow the ordinary Practice in this case, are content to apply Red Precipitate. 1708 J. Kersey Dict. Anglo-Britannicum Arcanum Corallinum, the red Precipitate of Mercury, or Quick-silver, on which well rectify'd Spirit of Wine has been burnt Six times. 1753 J. Bartlet Gentleman's Farriery xxxi. 259 Some make their scalding mixture milder, using red precipitate instead of the sublimate. 1849 D. Campbell Pract. Text-bk. Inorg. Chem. 233 Oxide of mercury..reduced to a fine powder, it is changed to a yellow. It is known in pharmacy as red precipitate. 1962 Science June 761/3 To this point all of the men who had prepared a gas from red precipitate of mercury had identified it with some previously known species. < as lemmas |
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