V2EX valent

Valent

Definition / 释义

valent (adj.)
1)(化学)有(某种)化合价的;几价的(如 divalent 二价的、trivalent 三价的)。
2)(语言学)有(某种)配价/支配能力的(指动词等成分能支配的论元数量与类型)。
注:该词在日常英语中较少单独使用,更常见于复合词(如 tetravalent )或专业语境。

Pronunciation / 发音

/velnt/

Examples / 例句

Copper is usually divalent in this compound.
在这种化合物里,铜通常是二价的。

In syntax, some verbs are valent enough to take both a direct object and an indirect object.
在句法学中,有些动词的配价足够高,可以同时带直接宾语和间接宾语。

Etymology / 词源

来自拉丁语 valēns(“强健的、有力量的”),与 valēre(“强壮、有效、起作用”)同源。后来在科学与语言学用法中引申为“具有某种结合/支配能力的”,从而发展出“(原子)具有某种价”“(动词)具有某种配价”等专业意义。

Related Words / 相关词

Literary Works / 文学作品

valent 属于偏专业、偏书面词汇,在经典文学作品中相对少见;它更常出现在化学、语言学等学术写作或教材中,尤其以复合形式(如 divalent / trivalent / tetravalent)出现。

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