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 At the cellular level, antivirals work for a variety of reasons, each with its own specialty in attacking the virus at different points in its life cycle. Ryan Prior, CNN, "After saving his own life with a repurposed drug, a professor reviews every drug being tried against Covid-19. Here's what he's found," 27 June 2020 But a dam at the western end of the park restricts their ability to travel freely during the monsoon season, a crucial part of their life cycle. National Geographic, "One of world's rarest dolphins rebounding in Pakistan," 18 June 2020 Now in its sixth generation, the current M5 enters the second half of its life cycle. Jens Meiners, Car and Driver, "2021 BMW M5 and M5 Competition Get Updated Tech, Will Reach 190 MPH," 16 June 2020 This decision early on in our life cycle and prior to COVID-19 has certainly alleviated some of the pressures that would have come to our business with this pandemic. Rachel King, Fortune, "Eco-cleaning supply startup Blueland’s founder on meeting supply and demand when your competitors can’t," 15 June 2020 This can happen if someone gets tested too early in the virus’ life cycle, when the concentration of viral particles is too low to be detected in a test. Catherine Ho,, "Should I get a coronavirus test before seeing friends and family?," 7 June 2020 When lead-acid batteries reach the end of their life cycle after two to five years, adequate recycling plans are required to prevent lead pollution. Anuradha Varanasi, Wired, "India Is Using More Solar Energy—but It Carries a Lead Risk," 6 June 2020 Other 17-year broods live in mid-Atlantic states and the Mississippi Valley, whereas broods that have a 13-year life cycle are largely found in Alabama, Kentucky and Tennessee. Knvul Sheikh, Scientific American, "Noisy Cicadas Are Widely Misunderstood," 5 June 2020 Instead, the researchers engage in life cycle analysis of the manufacturing process to estimate exactly how this method of making PEF would stack up with the competition. Scott K. Johnson, Ars Technica, "How to make plastic bottles from sugarcane and captured CO₂," 4 June 2020

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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The first known use of life cycle was in 1855

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Last Updated

3 Jul 2020

Cite this Entry

“Life cycle.” Dictionary, Merriam-Webster, Accessed 10 Jul. 2020.

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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

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