Noun
English Wikipedia has an article on:hemerythrinWikipedia
hemerythrin (countable and uncountable, plural hemerythrins)
(biochemistry) A respiratory pigment found in sipunculids, priapulids and brachiopods.
; Hemerythrin : Some marine invertebrates and a few species of annelid use this iron-containing non-heme protein to carry oxygen in their blood. Source: Internet