köken: Learned borrowing from Latin hippocampus, from Ancient Greek ἱππόκαμπος (hippókampos), from ἵππος (híppos, “horse”) + κάμπος (kámpos, “sea-monster”).
köken: Etymology tree Proto-Celtic *kaballosder.? Latin caballus Old Galician-Portuguese cavalo Portuguese cavalo Proto-Indo-European *mer-? Proto-Indo-European *móri Proto-Italic *mari Latin mare Proto-Indo-European *-nós Proto-Indo-European *-iHnos Proto-Italic *-īnos Latin -īnus Latin marīnus Old Galician-Portuguese marinno Portuguese marinho Portuguese cavalo-marinho From cavalo + marinho, literally…
köken: Compound of 竜 (tatsu, “dragon”) + の (no, “-'s”) + 落とし子 (otoshigo, “illegitimate child”), from their resemblance to dragons. First cited to a work from 1847.