Definition of "formyl" [for•myl]

• The negative univalent radical HCO, characteristic of aldehydes. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "They found five receptors from a family of proteins known as formyl peptide receptors."
• "If it says "folic acid" then find another vitamin that has the words "L 5 methyl-tetrahydrofolate" or "5 formyl tetrahydrofolate" on the label."
• "N-formyl-methionine is still used in the mitochondria (which is a direct descendant of prokaryotic symbiotes)."