Where does “þannā” come from?

þannā (Proto-West Germanic) comes from Proto-Germanic þan, from Proto-Germanic þam, from Proto-Indo-European tóm, from Proto-Indo-European só — this; that.

Ancestry of “þannā”, step by step

StepLanguageWordMeaning
1Proto-Germanicþanthen, at that time
2Proto-Germanicþam—
3Proto-Indo-Europeantóm—
4Proto-Indo-Europeansóthis; that

Words derived from “þannā”

Every word from Proto-Indo-European só →Every word from Proto-Indo-European tóm →Every word from Proto-Germanic þam →