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gram-positive

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gram-positive¹

Where it comes from

From Gram (“a surname”) + positive, after Danish bacteriologist Hans Christian Gram, who invented the Gram staining method.

adjective Gram-positive

  1. not comparable, of a bacterium That is stained violet by Gram's method

Gram-positive²

Where it comes from

From Gram (“a surname”) + positive, after Danish bacteriologist Hans Christian Gram, who invented the Gram staining method.

adjective gram-positive

  1. not comparable, of a bacterium That stains dark blue or violet after Gram staining, due to large quantities of peptidoglycan in the cell wall. Generally, ionophore antibiotics are highly effective against Gram-positive bacteria but exhibit little or no activity against Gram-negative bacteria (Chen and Wolin, 1979; Watanabe et al., 1981).

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adj stained violet by Gram's method

Deutschgrampositiv
Italianogram-positivo

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MLA

"gram-positive." Wiktionary, via Micwyn, micwyn.com/word/gram-positive. Accessed 6 Nov. 2026.

APA

gram-positive. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/gram-positive

Chicago

"gram-positive." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/gram-positive.

BibTeX
@misc{gram_positive_2026,
  title = {gram-positive},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/gram-positive},
  urldate = {2026-11-06}
}