| 单词 | covalent |
| 释义 | covalent adj. Chem. of, relating to, or characterized by covalency. Phrases and idioms covalent bond Chem. a bond formed by sharing of electrons usu. in pairs by two atoms in a molecule. Derivatives covalence n. covalently adv. Etymology: CO- + valent, after trivalent etc. |
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