Where does “tenuità” come from?

tenuità (Italian) comes from Latin tenuitas, from Latin tenuis, from Proto-Indo-European ténh₂us, from Proto-Indo-European tenh₂-, from Proto-Indo-European ten- — to stretch, to extend.

tenuità (Italian): softness, thinness, tenuity, faintness

Definitions

softness, thinness, tenuity, faintness

Ancestry of “tenuità”, step by step

Step	Language	Word	Meaning
1	Latin	tenuitas	thinness, fineness; poverty; frugality
2	Latin	tenuis	thin, fine, slender; weak, watery; slight,...
3	Proto-Indo-European	ténh₂us	thin
4	Proto-Indo-European	tenh₂-	to stretch, to extend
5	Proto-Indo-European	ten-	to stretch, to extend

Every word from Proto-Indo-European ten- →Every word from Proto-Indo-European tenh₂- →Every word from Proto-Indo-European ténh₂us →