Where does “upscattering” come from?

upscattering (English) comes from English up, from Middle English up, from Old English upp, from Proto-West Germanic *upp.

upscattering (English): The increase in wavelength of radiation scattered...

Definitions

  1. The increase in wavelength of radiation scattered...

Ancestry of “upscattering”, step by step

upscattering traces back through two separate lines of ancestry.

via English up

StepLanguageWordMeaning
1EnglishupAway from the surface of the Earth or other...
2Middle Englishupto a vertical axis
3Old Englishuppup; upstairs
4Proto-West Germanic*upp

via English scattering

StepLanguageWordMeaning
1Englishscatteringpresent participle of scatter; A small quantity...
Every word from Proto-West Germanic *uppEvery word from Old English uppEvery word from Middle English up