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Definition of Chromaffin
1. [adj]
Medical Definition of Chromaffin
1. Giving a brownish yellow reaction with chromic salts; denoting certain cells in the medulla of the adrenal glands and in paraganglia. Synonym: chromaphil, chromatophil, chromophil, chromophile, pheochrome. Origin: chrom-+ L. Affinis, affinity (05 Mar 2000)