Where does “отекать” come from?

отекать (Russian) comes from Russian отечь, from Russian течь, from Old East Slavic течи, from Proto-Slavic teťi, from Proto-Balto-Slavic tektej, from Proto-Indo-European tekʷ- — to run, to flow.

отекать (Russian): to swell, to be swollen, to become dropsical

Definitions

to swell, to be swollen, to become dropsical

Ancestry of “отекать”, step by step

Step	Language	Word	Meaning
1	Russian	отечь	to swell, to be swollen, to become dropsical
2	Russian	течь	to flow, to run, to stream, to move; to leak;...
3	Old East Slavic	течи	—
4	Proto-Slavic	teťi	to flow, run
5	Proto-Balto-Slavic	tektej	—
6	Proto-Indo-European	tekʷ-	to run, to flow

Every word from Proto-Indo-European tekʷ- →Every word from Proto-Balto-Slavic tektej →Every word from Proto-Slavic teťi →