Where does “hypotonicity” come from?

hypotonicity (English) comes from English hypotonic, from English tonic, from English tone, from Middle English tone, from Latin tonus, from Ancient Greek τόνος, from Proto-Hellenic tónos, from Proto-Indo-European tónos — to stretch, to extend.

hypotonicity (English): The quality of being hypotonic

Definitions

  1. The quality of being hypotonic

Ancestry of “hypotonicity”, step by step

hypotonicity traces back through two separate lines of ancestry.

via English hypotonic

StepLanguageWordMeaning
1EnglishhypotonicHaving a lower osmotic pressure than another;...
2EnglishtonicPertaining to tension, especially of muscles;...
3EnglishtoneA specific pitch; An interval of a major second;...
4Middle Englishtonethe one
5LatintonusThe stretching or straining of a rope; A strain;...
6Ancient Greekτόνοςrope, cord; chord; tone, note
7Proto-Hellenictónosrope, cord; tension
8Proto-Indo-Europeantónossomething stretched; chord, fiber, string
9Proto-Indo-Europeanten-to stretch, to extend

via English ity

StepLanguageWordMeaning
1Englishity
2Ingrian-uUsed to form nouns from verbs
Every word from Proto-Indo-European ten-
hypotonicity — Etymology, Origin & Word History | Etymology Explorer