Where does “megatooth shark” come from?

megatooth shark (English) comes from English tooth, from Middle English toth, from Old English tōþ, from Proto-Germanic tanþs, from Proto-Indo-European h₃dónts, from Proto-Indo-European h₁ed- — to eat.

megatooth shark (English): Any extinct shark in the family †Otodontidae, especially megalodon

Definitions

  1. Any extinct shark in the family †Otodontidae, especially megalodon

Ancestry of “megatooth shark”, step by step

megatooth shark traces back through two separate lines of ancestry.

via English tooth

StepLanguageWordMeaning
1EnglishtoothA hard, calcareous structure present in the mouth...
2Middle EnglishtothAlternative form of tothe
3Old Englishtōþtooth
4Proto-Germanictanþstooth
5Proto-Indo-Europeanh₃dóntstooth
6Proto-Indo-Europeanh₁ed-to eat

via English mega

StepLanguageWordMeaning
1EnglishmegaVery large; great; excellent
2Ancient Greekμέγαςbig, large; great, mighty, loud; marvelous,...
3Proto-Indo-Europeanmeǵh₂sgreat
Every word from Proto-Indo-European h₁ed- →Every word from Proto-Indo-European h₃dónts →Every word from Proto-Germanic tanþs →