Medical Definition of Bacteriaceae
1 in some classifications : a large family of rod-shaped usually gram-negative bacteria (order Bacillales) that produce no spores and have a complex metabolism utilizing amino acids and generally carbohydrates
2 in former classifications : a family comprising all simple cylindrical bacteria lacking a sheath and including the family Bacteriaceae, the genus Bacillus, and a number of other groups
showing great care, attention, and effort
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