Where does “megatidal” come from?

megatidal (English) comes from English tidal, from English tide, from Middle English tyde, from Old English tīd, from Proto-Germanic tīdiz, from Proto-Indo-European déh₂itis, from Proto-Indo-European deh₂y-, from Proto-Indo-European deh₂- — to share, divide.

megatidal (English): Having a large tidal range

Definitions

  1. Having a large tidal range

Ancestry of “megatidal”, step by step

megatidal traces back through two separate lines of ancestry.

via English tidal

StepLanguageWordMeaning
1Englishtidalrelating to tides
2EnglishtideThe periodic change of the sea level,...
3Middle EnglishtydeA time (period), season
4Old Englishtīdtime, period, season; period, season, time;...
5Proto-Germanictīdiztime; period, interval
6Proto-Indo-Europeandéh₂itisinterval, period of time
7Proto-Indo-Europeandeh₂y-to share, divide
8Proto-Indo-Europeandeh₂-to share, divide

via English mega

StepLanguageWordMeaning
1EnglishmegaVery large; great; excellent
2Ancient Greekμέγαςbig, large; great, mighty, loud; marvelous,...
3Proto-Indo-Europeanmeǵh₂sgreat
Every word from Proto-Indo-European deh₂-Every word from Proto-Indo-European deh₂y-Every word from Proto-Indo-European déh₂itis