| 单词 | valence |
| 释义 | valence (once / 8389 pages) 1n 2n The valence of an atom is the ability of that atom, expressed in numbers, to combine or interact with another atom, depending on the number of electrons available for bonding in the atom’s outer shell, called the valence shell. The Latin valentia, "strength," is the basis for the word valence. It's a fitting word, as the valence of an element determines its strength — an idea that was first recorded in the later 19th Century. Since the word valence carries the idea of interaction, it can also be used to describe the amount of attraction or repulsion by people, either toward each other or an event. WORD FAMILYvalence: valences USAGE EXAMPLESBut he misunderstands the particular valence this term carries in psychology. Slate(Oct 31, 2016) It is positive in valence but still undermines and patronizes women. Salon(Oct 27, 2016) The valence axis, Daly explains, shows “how pleasant or unpleasant an experience is”, while the arousal axis measures “how exciting or boring an experience is.” The Guardian(Sep 12, 2016) 1 n (chemistry) a property of atoms or radicals; their combining power given in terms of the number of hydrogen atoms (or the equivalent) 2Syn|Hypo|Hyper valency covalence, covalency valence characterized by the sharing of electrons in a chemical compound; the number of pairs of electrons an atom can share power, powerfulness possession of controlling influence n (biology) a relative capacity to unite or react or interact as with antigens or a biological substrate Syn|Hyper valency power, powerfulness possession of controlling influence |
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