Where does “kalender” come from?

kalender (Estonian) comes from German Kalender, from Latin calendārium, from Latin Calendae, from Latin calāre, from Latin chalāre, from Ancient Greek χαλάω — I slacken; I loosen; I become slack; I become...

kalender (Estonian): calendar

Definitions

calendar

Ancestry of “kalender”, step by step

Step	Language	Word	Meaning
1	German	Kalender	calendar; agenda, scheduler, planner; omasum
2	Latin	calendārium	an account book or debt book
3	Latin	Calendae	Abbreviation Cal; astronomical new moon; calends
4	Latin	calāre	—
5	Latin	chalāre	—
6	Ancient Greek	χαλάω	I slacken; I loosen; I become slack; I become...

Every word from Ancient Greek χαλάω →Every word from Latin chalāre →Every word from Latin calāre →