Where does “rosmarus” come from?

rosmarus (New Latin) comes from Old Norse rosmhvalr, from Old Norse hvalr, from Proto-Germanic hwalaz, from Proto-Indo-European (s)kʷálos — large fish; sheatfish.

Ancestry of “rosmarus”, step by step

StepLanguageWordMeaning
1Old Norserosmhvalrwalrus
2Old Norsehvalrwhale
3Proto-Germanichwalazwhale, sheatfish
4Proto-Indo-European(s)kʷáloslarge fish; sheatfish

Words derived from “rosmarus”

Every word from Proto-Indo-European (s)kʷálos →Every word from Proto-Germanic hwalaz →Every word from Old Norse hvalr →
rosmarus — Etymology, Origin & Word History | Etymology Explorer