endosymbiosis

noun
en·​do·​sym·​bi·​o·​sis | \ ˌen-dō-ˌsim-bī-ˈō-səs How to pronounce endosymbiosis (audio) , -bē- \

Definition of endosymbiosis

: symbiosis in which a symbiont dwells within the body of its symbiotic partner

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Other Words from endosymbiosis

endosymbiont \ ˌen-​dō-​ˈsim-​bī-​ˌänt How to pronounce endosymbiont (audio) , -​bē-​ \ noun
endosymbiotic \ ˌen-​dō-​ˌsim-​bī-​ˈä-​tik How to pronounce endosymbiotic (audio) , -​bē-​ \ adjective

Examples of endosymbiosis in a Sentence

Recent Examples on the Web The first endosymbiosis occurred when a prokaryote—a single-cell organism without a nucleus—engulfed a bacterium, producing the first eukaryotic cell about 1.7 billion years ago. Viviane Callier, Smithsonian, "This Type of Algae Absorbs More Light for Photosynthesis Than Other Plants," 23 Oct. 2019 So the easiest solution is often for cells with dissimilar abilities and complementary needs to merge, explains John McCutcheon, an endosymbiosis researcher at the University of Montana. Quanta Magazine, "Cell-Bacteria Mergers Offer Clues to How Organelles Evolved," 3 Oct. 2019 Researchers call this type of evolutionary merger between two eukaryotes a secondary endosymbiosis. Viviane Callier, Smithsonian, "This Type of Algae Absorbs More Light for Photosynthesis Than Other Plants," 23 Oct. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'endosymbiosis.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of endosymbiosis

1932, in the meaning defined above

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Time Traveler for endosymbiosis

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The first known use of endosymbiosis was in 1932

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Cite this Entry

“Endosymbiosis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/endosymbiosis. Accessed 18 Feb. 2020.

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More Definitions for endosymbiosis

endosymbiosis

noun
en·​do·​sym·​bi·​o·​sis | \ ˌen-dō-ˌsim-bī-ˈō-səs How to pronounce endosymbiosis (audio) , -bē- How to pronounce endosymbiosis (audio) \
plural endosymbioses\ -​ˌsēz How to pronounce endosymbioses (audio) \

Medical Definition of endosymbiosis

: symbiosis in which a symbiotic organism lives within the body of its partner

Other Words from endosymbiosis

endosymbiotic \ -​ˈät-​ik How to pronounce endosymbiotic (audio) \ adjective

More from Merriam-Webster on endosymbiosis

Britannica.com: Encyclopedia article about endosymbiosis

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