Where does “तिब्बत” come from?

तिब्बत (Hindi) comes from Arabic تبت, from Sogdian ܬܘܦܐܝܝܬ.

Ancestry of “तिब्बत”, step by step

Step	Language	Word	Meaning
1	Arabic	تبت	second-person masculine singular non-past active...
2	Sogdian	ܬܘܦܐܝܝܬ	—