Where does “जलतरङ्ग” come from?

जलतरङ्ग (Sanskrit) comes from Sanskrit जल, from Sanskrit जल् — to be sharp; to be stiff or dull.

Ancestry of “जलतरङ्ग”, step by step

जलतरङ्ग traces back through two separate lines of ancestry.

via Sanskrit जल

StepLanguageWordMeaning
1Sanskritजलstupid, unintelligent, dumb; a stupid man, idiot;...
2Sanskritजल्to be sharp; to be stiff or dull

via Sanskrit तरङ्ग

StepLanguageWordMeaning
1Sanskritतरङ्ग
Every word from Sanskrit जल्Every word from Sanskrit जल