life cycle


Definition of life cycle

1 : the series of stages in form and functional activity through which an organism passes between successive recurrences of a specified primary stage
3 : a series of stages through which something (such as an individual, culture, or manufactured product) passes during its lifetime

Examples of life cycle in a Sentence

the life cycle of a shark

Recent Examples on the Web

The moths wandering about the shoebox seemed set free, able to carry out their life cycle. Vanessa Hua,, "The wonder of silkworms, past and present," 3 July 2019 It’s during the first part of their life cycle that phenotypic plasticity can occur. Starre Vartan, National Geographic, "Meet the shape-shifting baby amphibians that become cannibals," 26 June 2019 Japanese beetles have a one-year complete life cycle from egg, larva, pupa to adult. Betty Cahill, The Denver Post, "How to get bad insects out of your garden, from Japanese beetles to spider mites," 24 June 2019 Runciman’s suggestion that political constitutions have a natural life cycle is reminiscent of Oswald Spengler, the author of The Decline of the West and the exemplary political and cultural writer of the Weimar Republic. Adam Tooze, The New York Review of Books, "Democracy and Its Discontents," 6 June 2019 Destiny 2 has had a long and somewhat troubled life cycle. Nick Statt, The Verge, "Bungie unveils big Destiny 2 shift with Shadowkeep expansion and free-to-play version," 6 June 2019 Federal law authorizes the Nuclear Regulatory Commission to regulate the safety of the nuclear fuel life cycle. The Editorial Board, WSJ, "The Court’s Unpolitical Conservatives," 17 June 2019 For malaria, Calibr’s approach is to develop and improve drugs that attack the malarial parasite or the mosquitoes that carry it at all stages of the parasite’s life cycle, said Arnad Chatterjee, Calibr’s vice president of medicinal chemistry. San Diego Union-Tribune, "Scripps Research forges ahead with drugs for arthritis, malaria and cancer," 14 June 2019 Last summer, the team implemented a comprehensive common carp control campaign, including year-round strategies that take advantage of the fish’s life cycle. Joanna Klein, New York Times, "Fish Cannons, Koi Herpes and Other Tools to Combat Invasive Carp," 4 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'life cycle.' 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 life cycle

1855, in the meaning defined at sense 1

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Last Updated

6 Jul 2019

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The first known use of life cycle was in 1855

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More Definitions for life cycle

life cycle


English Language Learners Definition of life cycle

biology : the series of stages through which a living thing passes from the beginning of its life until its death

life cycle


Medical Definition of life cycle

1 : the series of stages in form and functional activity through which an organism passes between successive recurrences of a specified primary stage

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More from Merriam-Webster on life cycle

Rhyming Dictionary: Words that rhyme with life cycle

Spanish Central: Translation of life cycle Encyclopedia article about life cycle

Comments on life cycle

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to form ideas or theories about something

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