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gram negative
This term is a technical classification used in microbiology to describe bacteria based on the structural composition of their cell walls. It is a neutral, descriptive scientific term used primarily in medical, laboratory, and academic contexts to guide the selection of appropriate antimicrobial treatments.
Because it refers to a specific biological property, it is almost exclusively used as an attributive adjective modifying nouns like bacteria, bacilli, or organisms. It is not used in casual conversation or non-scientific contexts.
Meanings
Examples
The lab results confirm the infection is caused by gram negative bacteria.
We need to identify if the pathogen is gram positive or gram negative.
Some gram negative organisms are more resistant to certain antibiotics.
The outer membrane of gram negative cells acts as a barrier.
The sample stained pink, indicating it is gram negative.
He studied the unique cell wall structure of gram negative bacilli.