Where does “zomertijd” come from?

zomertijd (Dutch) comes from Dutch zomer, from Middle Dutch sōmer, from Old Dutch sumar, from Proto-Germanic sumaraz, from Proto-Indo-European sm̥m-aro-, from Proto-Indo-European sm̥-h₂-ó-, from Proto-Indo-European semh₂- — summer, year.

zomertijd (Dutch): daylight saving time

Definitions

  1. daylight saving time

Ancestry of “zomertijd”, step by step

zomertijd traces back through two separate lines of ancestry.

via Dutch zomer

StepLanguageWordMeaning
1Dutchzomersummer
2Middle Dutchsōmersummer
3Old Dutchsumar
4Proto-Germanicsumarazsummer
5Proto-Indo-Europeansm̥m-aro-
6Proto-Indo-Europeansm̥-h₂-ó-
7Proto-Indo-Europeansemh₂-summer, year

via Dutch tijd

StepLanguageWordMeaning
1Dutchtijdtime; tense
2Middle Dutchtijttime; time, moment; right, appointed time
3Old Dutchtīttime
4Proto-Germanictīdiztime; period, interval
5Proto-Indo-Europeandéh₂itisinterval, period of time
6Proto-Indo-Europeandeh₂y-to share, divide
7Proto-Indo-Europeandeh₂-to share, divide
Every word from Proto-Indo-European semh₂-Every word from Proto-Indo-European sm̥-h₂-ó-Every word from Proto-Indo-European sm̥m-aro-