Agglutinin Meaning of Agglutinin: A substance that makes particles (such as bacteria or cells) stick together to form a clump or a mass. Also See: Angiogenesis Inhibitor ADC ABVD regimen Anal Cancer Auricular acupuncture Atrasentan Alzheimer Disease Adjustment disorder Arzoxifene hydrochloride Digestion ALSO SEE: Acoustic neurofibromatosis