出典:Wiktionary
From Late Latin valentia and Latin valentia (“bodily strength; health; vigour”) + English -y (suffix forming abstract nouns denoting a condition, quality, または state). Valentia is derived from valēns (“healthy, strong, vigorous”) + -ia (suffix forming feminine abstract nouns); while valēns is the present active participle of valeō (“to be healthy, sound, または well; to be strong; to have influence または power, etc.”),[1] ultimately from Proto-Indo-European *h₂welh₁- (“to rule; powerful, strong”).
Sense 1 (“combining capacity of an atom”) and sense 3 (“number of arguments a verb can have”) are possibly from valence + -y.
valency (countable かつ uncountable, 複数形 valencies) (chiefly, Britain)
名詞の変化形:
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