Originally: a group or radical (radical, n. 5a) in an uncombined state. Now: spec. an uncharged atom or group of atoms having one or more unpaired…
| 单词 | θ67515 |
| 释义 | the world > matter > chemistry > chemical bonding > [noun] > bonds > free radical (2) free radical1870 Originally: a group or radical (radical, n. 5a) in an uncombined state. Now: spec. an uncharged atom or group of atoms having one or more unpaired… radical1900 Chemistry. spec. = free radical, n. |
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