单词 | asymmetric |
释义 | asymmetric —asymmetrically, adv. /ay'seuh me"trik, as'euh-/, adj. 1. not identical on both sides of a central line; unsymmetrical; lacking symmetry: Most faces are asymmetric. 2. (of a logical or mathematical relation) holding true of members of a class in one order but not in the opposite order, as in the relation "being an ancestor of." 3. Chem. a. having an unsymmetrical arrangement of atoms in a molecule. b. noting a carbon atom bonded to four different atoms or groups. c. (of a polymer) noting an atom or group that is within a polymer chain and is bonded to two different atoms or groups that are external to the chain. Also, asymmetrical. [1870-75; A-6 + SYMMETRIC] |
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