The story
From carbamidomethyl + -ation.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: A chemical modification where a carbamidomethyl group is added to cysteine residues in proteins, usually using iodoacetamide, to block reactive thiol groups and prevent disulfide bonds from reforming, especially during mass spectrometry sample preparation. Full definition →
From carbamidomethyl + -ation.
Etymology from Wiktionary, CC BY-SA 4.0.