Where does “hadalpelagic” come from?

hadalpelagic (English) comes from English pelagic, from Latin pelagicus, from Ancient Greek πελαγικός, from Ancient Greek -ικός, from Ancient Greek -κός, from Proto-Indo-European -ḱos — -y, -ic.

hadalpelagic (English): Relating to the oceans at depths greater than...

Definitions

  1. Relating to the oceans at depths greater than...

Ancestry of “hadalpelagic”, step by step

hadalpelagic traces back through two separate lines of ancestry.

via English pelagic

StepLanguageWordMeaning
1EnglishpelagicLiving in the open sea rather than in coastal or...
2Latinpelagicuspelagic
3Ancient Greekπελαγικός
4Ancient Greek-ικόςof or pertaining to, in the manner of; -ic
5Ancient Greek-κόςforms adjectives with the sense of 'of or...
6Proto-Indo-European-ḱos-y, -ic

via English hadal

StepLanguageWordMeaning
1EnglishhadalOf or relating to the deepest parts of the ocean
2Frenchhadalhadal
3French-álal; appended to various words, often nouns, to make an adjective form; often added to words of Latin origin, but used with other words also
4Latin-ālis
5Proto-Italic-ālisforms relational adjectives
Every word from Proto-Indo-European -ḱosEvery word from Ancient Greek -ικόςEvery word from Ancient Greek -κός