Where does “телекоммуникационный” come from?

телекоммуникационный (Russian) comes from Russian -о́нный — ional, etc. forms adjectives, especially.

телекоммуникационный (Russian): telecommunications

Definitions

  1. telecommunications

Ancestry of “телекоммуникационный”, step by step

StepLanguageWordMeaning
1Russian-о́нныйional, etc. forms adjectives, especially
Every word from Russian -о́нный