Where does “ictericus” come from?

ictericus (Latin) comes from Ancient Greek ἰκτερικός, from Ancient Greek ἴκτερος, from Ancient Greek ὕδερος, from Proto-Indo-European úderos, from Proto-Indo-European úd-er-o-s, from Proto-Indo-European údteros, from Proto-Indo-European úd — out, outward.

ictericus (Latin): jaundiced