nonheme

adjective

non·​heme ˌnän-ˈhēm 

: not containing or being iron that is bound in a porphyrin ring like that of heme

nonheme iron

nonheme proteins

Word History

First Known Use

1950, in the meaning defined above

Medical Definition

nonheme

adjective

non·​heme

variants or chiefly British nonhaem

ˈnän-ˈhēm 

: not containing or being iron that is bound in a porphyrin ring like that of heme

the ferredoxins are nonheme iron proteins