Where does “semipolluted” come from?

semipolluted (English) comes from English semi, from English semi-, from Latin sēmi-, from Proto-Indo-European sēmi — half; partially.

semipolluted (English): Somewhat polluted

Definitions

  1. Somewhat polluted

Ancestry of “semipolluted”, step by step

semipolluted traces back through two separate lines of ancestry.

via English semi

StepLanguageWordMeaning
1EnglishsemiA semi-detached house; A semitrailer; a...
2Englishsemi-half; partial, incomplete; somewhat, rather,...
3Latinsēmi-half
4Proto-Indo-Europeansēmihalf; partially

via English polluted

StepLanguageWordMeaning
1Englishpollutedmade unclean or impure; drunk; simple past tense...
Every word from Proto-Indo-European sēmiEvery word from English semi-Every word from English semi