Meaning of methemoglobin

met•he•mo•glo•bin

Pronunciation: (met-hē'mu-glō"bin, -hem'u-, -hē"mu-glō'-, -hem"u-), [key]
— n. Biochem.
  1. a brownish compound of oxygen and hemoglobin, formed in the blood, as by the use of certain drugs.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.