Where does “hypervalent” come from?

hypervalent (English) comes from English valent, from English Valence, from French Valence, from Latin Valentia, from Latin -ia, from Latin -ius, from Proto-Italic -jōs, from Proto-Indo-European -yós — Creates adjectives from noun or verb stems.

hypervalent (English): having a higher than normal valence

Definitions

  1. having a higher than normal valence

Ancestry of “hypervalent”, step by step

hypervalent traces back through two separate lines of ancestry.

via English valent

StepLanguageWordMeaning
1EnglishvalentHaving valence
2EnglishValenceThe number of arguments that a verb can have, including its subject, ranging from zero to three or, less commonly, four
3FrenchValencevalence
4LatinValentiahealth, vigour, bodily strength
5Latin-iaUsed to form a feminine abstract noun, usually...
6Latin-iusforming adjectives from nouns; nominative neuter...
7Proto-Italic-jōsForms comparative adjectives
8Proto-Indo-European-yósCreates adjectives from noun or verb stems

via English hyper

StepLanguageWordMeaning
1Englishhyperhyperactive; energetic; overly diligent;...
Every word from Proto-Indo-European -yós