Similar words: negative, nonnegative, negatively, negative ion, negative image, double negative, negative answer, negative charge. Meaning: adj. (of bacteria) being of or relating to a bacterium that does not retain the violet stain used in Gram's method.
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31. New resistance mechanisms, such as the beta-lactamase NDM-1, have emerged among several gram-negative bacilli.
More similar words: negative, nonnegative, negatively, negative ion, negative image, double negative, negative answer, negative charge, electronegative, negative number, negative correlation, negative effects, negative current, negative income tax, negative pressure, negative cash flow, negative feedback, negative reaction, negative direction, negatively charged, negativism, negativity, electronegativity, segregative, aggregative, selective amnesia, negation, abnegation, negate, gram-positive.