Where does “eskalator” come from?

eskalator (Crimean Tatar) comes from Russian эскала́тор, from English escalator, from Latin -tor, from Proto-Italic -tōr, from Proto-Indo-European -tōr, from Proto-Indo-European -tor-s.

eskalator (Crimean Tatar): escalator, moving staircase

Definitions

escalator, moving staircase

Ancestry of “eskalator”, step by step

Step	Language	Word	Meaning
1	Russian	эскала́тор	escalator (mechanical device)
2	English	escalator	Anything that escalates; A motor-driven...
3	Latin	-tor	-er
4	Proto-Italic	-tōr	Forms agent nouns to verb stems
5	Proto-Indo-European	-tōr	Derives agent nouns from verbs, denoting someone...
6	Proto-Indo-European	-tor-s	—

Every word from Proto-Indo-European -tor-s →Every word from Latin -tor →Every word from English escalator →