Originally: a hydrocarbon radical present in wood spirit (which consists chiefly of methanol). Later: the group or radical —CH2—, which is the…
| 单词 | θ69419 |
| 释义 | the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > hydrocarbon radicals > named, by number of carbon atoms > one (3) methylene1835 Originally: a hydrocarbon radical present in wood spirit (which consists chiefly of methanol). Later: the group or radical —CH2—, which is the… methyl1840 The hydrocarbon radical present in wood spirit (methanol) and its derivatives; the group or radical CH3—. methene1867 A divalent —CH2— group; = methylene, n. disused. |
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