Where does “lenten” come from?

lenten (Middle Dutch) comes from Old Dutch lentin, from Proto-West Germanic langatīn, from Proto-West Germanic lang, from Proto-Germanic langaz, from Proto-Indo-European dlongʰos — long.

Ancestry of “lenten”, step by step

StepLanguageWordMeaning
1Old Dutchlentin—
2Proto-West Germaniclangatīnspring
3Proto-West Germaniclanglong
4Proto-Germaniclangazlong
5Proto-Indo-Europeandlongʰoslong
Every word from Proto-Indo-European dlongʰos →Every word from Proto-Germanic langaz →Every word from Proto-West Germanic lang →