corrin

corrin (plural corrins)

1. (organic chemistry) A molecular species that contains four reduced pyrrole rings joined in a macrocycle by three -CH= groups and one direct bond; central to the cobalt-containing vitamin cobalamin.
   • 1998, Georgina Ferry, Dorothy Hodgkin: A Life:

     But the result showed unequivocally that the vitamin contained a ring system unlike any that had been seen before (it was later given the name ‘corrin’).

• corrole
• porphyrin

corrin

1. third-person plural present subjunctive form of córrer
2. third-person plural imperative form of córrer