life cycle

noun

1
: the series of stages in form and functional activity through which an organism passes between successive recurrences of a specified primary stage
2
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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Older leaves on the bottom of the orchid can yellow, soften, and die as part of the normal life cycle, Kondrat explains. Leanne Potts, Better Homes & Gardens, 15 Jan. 2026 The garden, says Joffe, is a haven for biodiversity, filled with plants that support the full life cycles of butterflies and bees. Jessica Gelt, Los Angeles Times, 14 Jan. 2026 Understanding the scam life cycle is essential to crafting durable policy. Caroline Melear, Oc Register, 13 Jan. 2026 Also, as a part of it, no more than 30% of vehicles could be in use beyond their life cycles. Lauren Linder, CBS News, 12 Jan. 2026 See All Example Sentences for life cycle

Word History

First Known Use

1855, in the meaning defined at sense 1

Time Traveler
The first known use of life cycle was in 1855

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Cite this Entry

“Life cycle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/life%20cycle. Accessed 16 Jan. 2026.

Kids Definition

life cycle

noun
1
: the series of stages of form and activity through which a living thing passes from a beginning stage (as an egg) in one individual to the same stage in its offspring
2

Medical Definition

life cycle

noun
1
: the series of stages in form and functional activity through which an organism passes between successive recurrences of a specified primary stage
2

More from Merriam-Webster on life cycle

Last Updated: - Updated example sentences
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