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bacteriophage

American  
[bak-teer-ee-uh-feyj] / bækˈtɪər i əˌfeɪdʒ /

noun

  1. any of a group of viruses that infect specific bacteria, usually causing their disintegration or dissolution.


bacteriophage British  
/ bækˌtɪərɪˈɒfəɡəs, bækˈtɪərɪəˌfeɪdʒ, bækˌtɪərɪəˈfædʒɪk /

noun

  1. Often shortened to: phage.  a virus that is parasitic in a bacterium and multiplies within its host, which is destroyed when the new viruses are released

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

bacteriophage Scientific  
/ băk-tîrē-ə-fāj′ /
  1. A virus that infects and destroys bacterial cells.


Other Word Forms

Etymology

Origin of bacteriophage

First recorded in 1920–25; from French bactériophage; see origin at bacterio-, -phage

Vocabulary lists containing bacteriophage

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Bacteriophage therapy was a branch of medicine and the idea was compelling.

From BBC • Jun. 27, 2025

"We've been using phages' destructive power to kill bacteria and resolve infections for years," says Zeinab Hosseinidoust, an associate professor of biomedial and chemical engineering who holds the Canada Research Chair in Bacteriophage Bioengineering.

From Science Daily • Nov. 26, 2024

Bacteriophage P4 is a temperate virus, meaning it can integrate into the chromosome of its host cell and lie dormant.

From Salon • Nov. 9, 2023

Bacteriophage has also been tried with varying success on typhoid, cholera, bubonic plague.

From Time Magazine Archive

Bacteriophage may or may not be present in the water of an aquarium.

From Time Magazine Archive

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