| 释义 |
dissymmetrical, a.|dɪssɪˈmɛtrɪkəl|
[dis- 10.]
a. The opposite of symmetrical.
b. Symmetrical, but in opposite directions, like the two hands.
In Chem. said spec. of crystals having two corresponding forms, but turned in different directions (like an object and its reflexion in a mirror); also of molecules in which the atoms are supposed to be thus arranged.
1867G. Masson tr. Janet's Materialism 75 Two substances are called dissymmetrical when they are absolutely similar in all respects, except that they are opposed to each other like the two hands in the human body. 1880E. Cleminshaw Wurtz' Atom. Th. 303 The dissymmetrical compounds thus formed are..a mixture in equal proportions of dextro-rotatory and lævo-rotatory bodies. 1884Tyndall Introd. to Life of Pasteur 17 Pasteur invoked the aid of helices and magnets, with a view to rendering crystals dissymmetrical at the moment of their formation.
Hence dissyˈmmetrically adv.
1880E. Cleminshaw Wurtz' Atom. Th. 303 Dissymmetrically opposed compounds. |