Where does “ice age” come from?

ice age (English) comes from German Eiszeit, from German Zeit, from Middle High German zīt, from Old High German zīt, from Proto-Indo-European déh₂itis, from Proto-Indo-European deh₂y-, from Proto-Indo-European deh₂- — to share, divide.

ice age (English): A period of long-term reduction in the temperature of Earth's surface and atmosphere, resulting in the presence of major polar ice sheets that reach the ocean and calve icebergs

Definitions

  1. A period of long-term reduction in the temperature of Earth's surface and atmosphere, resulting in the presence of major polar ice sheets that reach the ocean and calve icebergs

Ancestry of “ice age”, step by step

StepLanguageWordMeaning
1GermanEiszeitice age
2GermanZeittime; time of day; period, era
3Middle High Germanzīttime
4Old High Germanzīttime
5Proto-Indo-Europeandéh₂itisinterval, period of time
6Proto-Indo-Europeandeh₂y-to share, divide
7Proto-Indo-Europeandeh₂-to share, divide
Every word from Proto-Indo-European deh₂- →Every word from Proto-Indo-European deh₂y- →Every word from Proto-Indo-European déh₂itis →