Where does “dan” come from?

dan (Dutch) comes from Middle Dutch dan, from Old Dutch than, from Proto-West Germanic *þan, from Proto-Germanic þan, from Proto-Germanic þam, from Proto-Indo-European tóm, from Proto-Indo-European só — this; that.

dan (Dutch): then, at that time; then, after that; then, in...

Definitions

then, at that time; then, after that; then, in...

Ancestry of “dan”, step by step

dan traces back through two separate lines of ancestry.

via Middle Dutch dan

Step	Language	Word	Meaning
1	Middle Dutch	dan	then, after that; then, in that case; thus,...
2	Old Dutch	than	then
3	Proto-West Germanic	*þan	then, at that time
4	Proto-Germanic	þan	then, at that time
5	Proto-Germanic	þam	—
6	Proto-Indo-European	tóm	—
7	Proto-Indo-European	só	this; that

via Japanese 段

Step	Language	Word	Meaning
1	Japanese	段	steps (up and down); stairs
2	Chinese	段	—

Words derived from “dan”

dan
dang

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