Nitre; (spec. in early use) sodium carbonate (natron), washing soda (now historical). In later use: (Homeopathy) potassium nitrate (saltpetre).
| 单词 | θ7130 |
| 释义 | the world > the earth > minerals > types of mineral > nitrates > [noun] > potassium nitrate (11) nitrumOE Nitre; (spec. in early use) sodium carbonate (natron), washing soda (now historical). In later use: (Homeopathy) potassium nitrate (saltpetre). salpetrec1325 Saltpetre. sal-nitre1416 Saltpetre. saltpetre1501 Potassium nitrate; = nitre, n. 1c Chilior cubic saltpetre: sodium nitrate. peter in roche1554 = roche petre, n. salt nitre1601 Old Chemistry. Particular substances of this class are distinguished by defining words (cf. sal, n.1); e.g. †salt ammoniac (= sal ammoniac, n.), †esse… nitre1617 Originally: †natron, native sodium carbonate (obsolete). In later use: sodium or potassium nitrate; spec. potassium nitrate (saltpetre). roche petre1634 Native saltpetre (potassium nitrate), esp. as found crystallized on the surface of rocks. Cf. peter in roche n. at roche, n.1 phrases and roched, adj. rock petre1667 = roche petre, n. Smyrna earth1735 The chief port of Asia Minor, situated at the head of the gulf of the same name, used attributively in the names of various things produced in the… nitre crystal1869 |
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