Where does “реактивный ранец” come from?

реактивный ранец (Russian) comes from Russian реакти́вный, from Russian -ный, from Old Church Slavonic -ьнъ, from Proto-Slavic -ьnъ — -ish, -ic, -al, -ed; From adjectives.

реактивный ранец (Russian): jetpack

Definitions

  1. jetpack

Ancestry of “реактивный ранец”, step by step

реактивный ранец traces back through two separate lines of ancestry.

via Russian реакти́вный

StepLanguageWordMeaning
1Russianреакти́вныйreactive
2Russian-ный-ish, -ic, -al, -ed
3Old Church Slavonic-ьнъish, -ic, -al, -ed
4Proto-Slavic-ьnъ-ish, -ic, -al, -ed; From adjectives

via Russian ранец

StepLanguageWordMeaning
1Russianранецbackpack
2GermanRanzensatchel
3Middle High Germanransbelly, paunch, satchel
Every word from Proto-Slavic -ьnъ →Every word from Russian -ный →Every word from Old Church Slavonic -ьнъ →