Dialister

An obsolete name for a genus of bacteria, the type species of which, D. pneumosintes, is now placed in the genus Bacteroides.

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Dia·lis·ter .dī-ə-'lis-tər n a genus of minute gram-negative parasitic strictly anaerobic bacteria of the family Bacteroidaceae that grow only in fresh sterile tissue or ascitic fluid and comprise cells occurring singly, in pairs, or in short chains

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Di·a·lis·ter (di″ə-lisґtər) a genus of gram-negative, anaerobic bacteria of the family Acidaminococcaceae, consisting of small coccobacilli occurring singly, in pairs, or in short chains, found in human clinical samples; members of this genus are associated with oral infections. The type species is D. pneumosinґtes.