gram-positive

adjective

gram-pos·​i·​tive ˈgram-ˈpä-zə-tiv How to pronounce gram-positive (audio)
-ˈpäz-tiv
: holding the purple dye when stained by Gram's stain
used chiefly of bacteria

Examples of gram-positive in a Sentence

Recent Examples on the Web Penicillin is available by prescription and can treat gram-positive bacteria that cause illnesses such as strep throat, tetanus, and tonsillitis. Jenny Sweigard, Verywell Health, 16 Nov. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'gram-positive.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1907, in the meaning defined above

Time Traveler
The first known use of gram-positive was in 1907

Dictionary Entries Near gram-positive

Cite this Entry

“Gram-positive.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/gram-positive. Accessed 25 Apr. 2024.

Medical Definition

gram-positive

adjective
gram-pos·​i·​tive ˈgram-ˈpäz-ət-iv, -ˈpäz-tiv How to pronounce gram-positive (audio)
: holding the purple dye when stained by Gram's stain
used chiefly of bacteria
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