Where does “eulittoral” come from?

eulittoral (English) comes from English eu, from Ancient Greek εὖ, from Ancient Greek ἐΰς, from Proto-Hellenic ehu-, from Proto-Indo-European h₁su-, from Proto-Indo-European h₁wes- — good; to be cheerful, happy; to eat, to feast.

eulittoral (English): Relating to the area beneath a littoral zone

Definitions

  1. Relating to the area beneath a littoral zone

Ancestry of “eulittoral”, step by step

eulittoral traces back through two separate lines of ancestry.

via English eu

StepLanguageWordMeaning
1Englisheu
2Ancient Greekεὖwell
3Ancient Greekἐΰςgood, brave, noble
4Proto-Hellenicehu-good
5Proto-Indo-Europeanh₁su-good
6Proto-Indo-Europeanh₁wes-good; to be cheerful, happy; to eat, to feast

via English littoral

StepLanguageWordMeaning
1EnglishlittoralOf or relating to the shore, especially the...
2LatinlittoralisAlternative form of lītorālis
3Latinlītusstrand, shore, beach
Every word from Proto-Indo-European h₁wes-Every word from Proto-Indo-European h₁su-Every word from Proto-Hellenic ehu-