Where does “underdensity” come from?

underdensity (English) comes from English density, from Middle French densité, from Old French dempsité, from Latin densitas, from Latin -tās, from Proto-Indo-European -teh₂ts, from Proto-Indo-European -teh₂, from Proto-Indo-European -tós — Creates verbal adjectives from verb stems.

underdensity (English): The condition or extent of being underdense

Definitions

  1. The condition or extent of being underdense

Ancestry of “underdensity”, step by step

underdensity traces back through two separate lines of ancestry.

via English density

StepLanguageWordMeaning
1EnglishdensityA measure of the mass of matter contained by a...
2Middle Frenchdensité
3Old Frenchdempsité
4Latindensitasthickness; density; abundance
5Latin-tāsty, -dom, -hood, -ness, -ship
6Proto-Indo-European-teh₂tsUsed to form nouns representing state of being
7Proto-Indo-European-teh₂Used to form nouns representing state of being
8Proto-Indo-European-tósCreates verbal adjectives from verb stems

via English under

StepLanguageWordMeaning
1EnglishunderIn or at a lower level than; As a subject of;...
2Middle Englishunderunder
3Old Englishunderunder, beneath
4Proto-Germanicunderamong, between; under, beneath; under
5Proto-Indo-Europeanh₁entérbetween
6Proto-Indo-Europeanh₁enin; in, inside
Every word from Proto-Indo-European -tós