life cycle

SEE SYNONYMS FOR life cycle ON THESAURUS.COM

noun

Biology. the continuous sequence of changes undergone by an organism from one primary form, as a gamete, to the development of the same form again.

a series of stages, as childhood and middle age, that characterize the course of existence of an individual, group, or culture.

any similar series of stages: the life cycle of a manufactured product.

Origin of life cycle

First recorded in 1870–75

Words nearby life cycle

life buoy, life car, life-care, lifecast, life coach, life cycle, life estate, life expectancy, life float, life force, life form

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for life cycle

On the other hand, the life-cycle is, in general, fairly simple.
Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 5|Various
In the vast majority of Gregarines, however, the life-cycle is limited to gametogony and sporogony.
Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 5|Various
There is some doubt as to the different stages in the life-cycle of this species.
Freshwater Sponges, Hydroids & Polyzoa|Nelson Annandale
But the free inoculations had begun many years ago, and the life-cycle moved at an accelerated pace here.
This Crowded Earth|Robert Bloch

The life-cycle of Moniliformis moniliformis (Bremser, 1811), Acanthocephala.
The Biotic Associations of Cockroaches|Louis M. Roth

British Dictionary definitions for life cycle

life cycle

noun

the series of changes occurring in an animal or plant between one development stage and the identical stage in the next generation

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

Medical definitions for life cycle

life cycle

n.

The characteristic course of developmental changes through which an organism passes from its inception as a fertilized zygote to its mature state, during which another zygote may be produced.

A progression through a series of differing stages of development.

Scientific definitions for life cycle

life cycle

The series of changes in the growth and development of an organism from its beginning as an independent life form to its mature state in which offspring are produced. In simple organisms, such as bacteria, the life cycle begins when an organism is produced by fission and ends when that organism in turn divides into two new ones. In organisms that reproduce sexually, the life cycle may be thought of as beginning with the fusion of reproductive cells to form a new organism. The cycle ends when that organism produces its own reproductive cells, which then begin the cycle again by undergoing fusion with other reproductive cells. The life cycles of plants, algae, and many protists often involve an alternation between a generation of organisms that reproduces sexually and another that reproduces asexually. See more at alternation of generations.

单词	life cycle
释义	life cycle SEE SYNONYMS FOR life cycle ON THESAURUS.COM noun Biology. the continuous sequence of changes undergone by an organism from one primary form, as a gamete, to the development of the same form again. a series of stages, as childhood and middle age, that characterize the course of existence of an individual, group, or culture. any similar series of stages: the life cycle of a manufactured product. Origin of life cycle First recorded in 1870–75 Words nearby life cycle life buoy, life car, life-care, lifecast, life coach, life cycle, life estate, life expectancy, life float, life force, life form Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for life cycle On the other hand, the life-cycle is, in general, fairly simple. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 5\|Various In the vast majority of Gregarines, however, the life-cycle is limited to gametogony and sporogony. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 5\|Various There is some doubt as to the different stages in the life-cycle of this species. Freshwater Sponges, Hydroids & Polyzoa\|Nelson Annandale But the free inoculations had begun many years ago, and the life-cycle moved at an accelerated pace here. This Crowded Earth\|Robert Bloch The life-cycle of Moniliformis moniliformis (Bremser, 1811), Acanthocephala. The Biotic Associations of Cockroaches\|Louis M. Roth British Dictionary definitions for life cycle life cycle noun the series of changes occurring in an animal or plant between one development stage and the identical stage in the next generation 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 Words related to life cycle biological clock, biorhythm, wheel of life Medical definitions for life cycle life cycle n. The characteristic course of developmental changes through which an organism passes from its inception as a fertilized zygote to its mature state, during which another zygote may be produced. A progression through a series of differing stages of development. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for life cycle life cycle The series of changes in the growth and development of an organism from its beginning as an independent life form to its mature state in which offspring are produced. In simple organisms, such as bacteria, the life cycle begins when an organism is produced by fission and ends when that organism in turn divides into two new ones. In organisms that reproduce sexually, the life cycle may be thought of as beginning with the fusion of reproductive cells to form a new organism. The cycle ends when that organism produces its own reproductive cells, which then begin the cycle again by undergoing fusion with other reproductive cells. The life cycles of plants, algae, and many protists often involve an alternation between a generation of organisms that reproduces sexually and another that reproduces asexually. See more at alternation of generations. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
随便看	south sea bubble south sea islands south seas south shetland islands south shields south-southeast south-southeastward south-southwest south-southwestward south st. paul south suburban south sudan south temperate zone south thompson south tyneside south tyrol south vietnam south vietnamese southward southwardly southwards southwark southwell southwest south west africa

life cycle

noun

Origin of life cycle

Words nearby life cycle

Example sentences from the Web for life cycle

British Dictionary definitions for life cycle

noun

Words related to life cycle

Medical definitions for life cycle

n.

Scientific definitions for life cycle