Where does “տրական” come from?

տրական (Old Armenian) comes from Old Armenian տամ, from Proto-Indo-European deh₃- — to give.

Ancestry of “տրական”, step by step

Step	Language	Word	Meaning
1	Old Armenian	տամ	to give, to present, to offer; to concede, to...
2	Proto-Indo-European	deh₃-	to give