co·chro·ma·tog·ra·phy .kō-.krō-mə-'täg-rə-fē n, pl -phies chromatography of two or more samples together esp identification of an unknown substance by chromatographic comparison with a known substance
co·chro·mato·graph .kō-.krō-'mat-ə-.graf, -krə- vb
Medical dictionary. 2011.