valency
/ˈveɪlənsɪ/noun
(pl. -ies)
1- Chemistry, chiefly Brit. the combining power of an element, especially as measured by the number of hydrogen atoms it can displace or combine with【化】〈主英〉化合价：
carbon always has a valency of 4.
碳元素的化合价总是4.比较VALENCE1.
1.1
- Linguistics the number of grammatical elements with which a particular word, especially a verb, combines in a sentence【语言学】价。
词源
early 17th cent.: from late Latin valentia 'power, competence', from valere 'be well or strong'.