Search Result for "haem": 
Wordnet 3.0

NOUN (1)

1. a complex red organic pigment containing iron and other atoms to which oxygen binds;
[syn: heme, haem, hematin, haemitin, protoheme]



WordNet (r) 3.0 (2006):

haem
    n 1: a complex red organic pigment containing iron and other
         atoms to which oxygen binds [syn: heme, haem,
         hematin, haemitin, protoheme]