Where does “त्रिकोणमितीय” come from?

त्रिकोणमितीय (Hindi) comes from Hindi त्रिकोणमिति, from Sanskrit त्रिकोण, from Sanskrit त्रि, from Proto-Indo-Aryan tráyas, from Proto-Indo-Iranian tráyas, from Proto-Indo-European *tréyes.

त्रिकोणमितीय (Hindi): trigonometric

Definitions

trigonometric

Ancestry of “त्रिकोणमितीय”, step by step

Step	Language	Word	Meaning
1	Hindi	त्रिकोणमिति	trigonometry
2	Sanskrit	त्रिकोण	triangle; triangular, a triangle
3	Sanskrit	त्रि	three
4	Proto-Indo-Aryan	tráyas	three
5	Proto-Indo-Iranian	tráyas	three
6	Proto-Indo-European	*tréyes	—

Every word from Proto-Indo-European *tréyes →