Where does “инфракрасный” come from?

инфракрасный (Russian) comes from Russian кра́сный, from Old East Slavic красьнъ, from Proto-Slavic krasьnъ, from Proto-Slavic krasa, from Proto-Indo-European kreH- — to shout.

инфракрасный (Russian): infrared (also abbreviated as ИК)

Definitions

  1. infrared (also abbreviated as ИК)

Ancestry of “инфракрасный”, step by step

StepLanguageWordMeaning
1Russianкра́сныйred; red; beautiful
2Old East Slavicкрасьнъbeautiful
3Proto-Slavickrasьnъbeautiful
4Proto-Slavickrasabeauty
5Proto-Indo-EuropeankreH-to shout
Every word from Proto-Indo-European kreH- →Every word from Proto-Slavic krasa →Every word from Proto-Slavic krasьnъ →
инфракрасный — Etymology, Origin & Word History | Etymology Explorer