life cyclen.

Brit.

/ˈlʌɪf ˌsʌɪkl/, U.S.

/ˈlaɪf ˌsaɪkəl/

Origin: Formed within English, by compounding. Etymons: life n., cycle n.¹

Etymology: < life n. + cycle n.¹

a. Biology. The sequence of stages through which an individual organism passes from origin as a zygote to death, or through which the members of a species pass from the production of gametes by one generation to that by the next.

ΘΚΠ

the world > life > biology > biological processes > development, growth, or degeneration > [noun] > life cycle

life cycle1855

life history1856

the world > life > biology > study > [noun] > natural history > work of

Physiologeta1300

history1534

natural history1534

life cycle1855

life history1856

nature notes1890

1855 R. Owen Lect. Compar. Anat. Invertebr. Animals (ed. 2) iv. 78 The dropsical enlargement of the encysted cestoid larva proceeds to such an extent as to make it highly improbable that they can carry out the future phases of their proper life-cycle.

1873 Monthly Microsc. Jrnl. 10 57 Thus the entire life cycle of this form is seen.

1913 W. E. Kellicott Textbk. Gen. Embryol. v. 209 This is based to a large extent upon the phenomena of the Protozoan life cycle.

1967 M. E. Hale Biol. Lichens ii. 27 The life cycle of fungi is completed when the vegetative thallus produces fruiting bodies that contain spores.

1983 Bee Craft 65 92 The leaflet..is well illustrated in colour and explains succinctly the life cycle of the Varroa mite.

2005 Independent 23 Sept. 42/3 Daddy-longlegs are only a nuisance in one phase of their life cycle. Their larvae are leatherjackets, those reddish-brown nuggetty things you find in the soil.

b. The course of human existence from birth, through childhood and maturity, to old age and death; spec. one that is characteristic of a particular culture.

ΘΚΠ

the world > life > source or principle of life > [noun] > course or span of life

life-dayOE

year-daysOE

timeOE

dayOE

lifeOE

life's timeOE

livelihoodOE

yearOE

lifetimea1300

life-whilea1300

for (also to) term of (a person's) lifea1325

coursec1384

livingc1390

voyage1390

agea1398

life's dayc1425

thread1447

racea1450

living daysc1450

natural life1461

lifeness1534

twist1568

leasec1595

span1599

clew1615

marcha1625

peregrination1653

clue1684

stamen1701

life term1739

innings1772

lifelong1814

pass-through1876

inning1885

natural1891

life cycle1915

puff1967

1915 Amer. Anthropologist 17 617 The exhibits cover, in as many halls, man's evolution, the life cycle of man, man's variations, and human pathology.

1949 M. Mead Male & Female xvi. 339 Here he is, only in middle age, and his life is over—..no new fields to conquer... So while he is not out of a job..the very nature of the life-cycle in America is such that he feels like an old man.

1959 G. D. Mitchell Sociol. vi. 103 Religion is mostly important to mankind at times of personal crisis or when new and socially significant stages of the life-cycle are approached: at birth, initiation, marriage, death.

1982 A. Gould & D. Siegel Unorthodox Bk. Jewish Rec. & Lists (1989) ix. 108 The Jewish Life Cycle..Birth..Nachas..Circumcision/Naming..Baby bonds with grandparents..Baby bonds with parents..Dancing lessons..Shopping..Piano lessons..First credit card..First trip to orthodontist..Bar/Bat Mitzvah..Marriage..Children..Grandparenthood..Nachas..Death.

2004 N.Y. Times (National ed.) 31 Oct. ii. 24/1 Much of the American life cycle, from totdom to codgerdom, plays out in cathode glow, and training for a lifetime of visual entertainment—the Zen of Watching—starts early.

2. In extended use: a course or evolution from a beginning, through development and productivity, to decay or ending. (Frequently in economic or business contexts.)

ΚΠ

1938 H. Read Coll. Ess. Lit. Crit. i. i. 19 The classical and romantic periods are related to each other in a ‘life-cycle’ which is the recurring cycle of the growth, maturity, and decay of culture.

1941 Amer. Econ. Rev. 31 401 During the early phases of the life cycle of industries and corporations, productivity of the capital investment is high, but as the cycle continues a period of decadence sooner or later sets in.

1965 H. I. Ansoff Corporate Strategy (1968) ii. 31 Objectives..will vary from one type of firm to another depending on the firm's past profitability, its prospects, and its stage in the life cycle.

1969 J. Argenti Managem. Techniques 70 Many product life-cycles are declining.

1971 Nature 12 Feb. 486/2 The photo-oxidation of sulphur dioxide to sulphuric acid in the atmosphere is relevant both to the formation of aerosols in polluted air and to the life cycle of sulphur compounds in the atmosphere.

2007 Sharp Edge June 69/2 (advt.) If you look at the lifecycle of your relation with a customer there are a number of key stages it moves through.

3. Usually as one word. Also with capital initial. Chiefly U.S. A proprietary name for: an exercise bicycle, esp. one incorporating a programmable computer which enables it to simulate different cycling conditions, and a monitor which displays the user's heart rate, etc.

ΘΚΠ

society > leisure > sport > types of sport or game > gymnastics > exercise > [noun] > equipment > others

trochus1706

troque1743

chamber horse1747

dumb-bell1785

stock1831

rowing machine1848

chest-expander1850

weights1862

stationary bicycle1883

punching bag1888

medicine ball1895

punching ball1895

stationary bike1899

kettlebell1908

rower1933

Exercycle1936

exercise bicycle1937

exercise bike1946

exercise cycle1952

roller1970

life cycle1973

multi-gym1976

gut-buster1983

roller1992

1973 Los Angeles Times 17 June xi. 4/6 (advt.) Just 12 minutes a day on the amazing Lifecycle will healthfully condition your heart and lungs.

1989 Sporting News (Nexis) 17 July 60 Wilson has been exercising daily on a lifecycle in his home gym and believes he's in the best shape of his career.

1994 E. Ehm She should Talk i. 14 I push myself in my workouts. I have to ride the Life Cycle at a certain level for a certain length of time.

2000 You & your Wedding Mar.–Apr. (Honeymoon Destinations 2000 Suppl.) 25/3 The Health Lounge offers top-class facilities, including stairmasters, treadmills, lifecycles and free weights.

Compounds

General attributive, as life-cycle analysis, life-cycle costing, life-cycle model, life-cycle stage, etc.

ΚΠ

1909 Elem. School Teacher 10 160 Another life-cycle study used in this grade is that of the moth or butterfly.

1927 Jrnl. Hygiene 26 457 There is no published evidence..as to the duration of the life cycle stages of Calliphora vomitoria.

1936 Social Forces 15 225/2 The life-cycle analysis of family living has opened up an important field in the method of family study.

1957 Amer. Econ. Rev. 47 922 Returning now to the dynamic aspects of the life-cycle model, we may develop the implications of our hypotheses about the growth of debt in a more general form.

1967 B. S. Cohn in P. Bohannan Law & Warfare 145 The general rule is that, when a household is celebrating a life-cycle rite,..at least one adult male..from every other household in the hamlet is invited.

1968 Public Admin. Rev. 28 463/1 A study of the relatively new management concepts in the procurement of major weapons systems such as..life cycle costing.

1977 J. L. Harper Population Biol. Plants xxi. 655 The life cycle strategy is likely in such a case to be influenced by the optimal allocation of sodium between parents and offspring.

1984 Acad. of Managem. Rev. 9 228/1 The life cycle model clearly reveals the psychologist's fallacy: continuing a project in the face of a financial setback is not always irrational.

1985 M. R. Haines in A. S. Rossi Gender & Life Course iii. 47 One method of describing the life cycle has been to use the age of head of household as a proxy for life-cycle stage.

1992 en Route Nov. 46/1 Developing a business in a still-nascent industry is something..standard life-cycle theories cannot explain.

1997 Housing Agenda Sept. (Finance Suppl.) 4/2 They commissioned a study of typical major repair costs, and projected them using life-cycle costing.

2001 S. Roaf et al. Ecohouse (2002) ii. 46 This cradle-to-grave approach is called ‘life cycle analysis’. It is used as a way of assessing the total impact of any building and shows the importance of the building's lifespan.

This entry has been updated (OED Third Edition, September 2009; most recently modified version published online March 2022).

单词	life cycle
释义	life cyclen. Brit. /ˈlʌɪf ˌsʌɪkl/, U.S. /ˈlaɪf ˌsaɪkəl/ Origin: Formed within English, by compounding. Etymons: life n., cycle n.¹ Etymology: < life n. + cycle n.¹ 1. a. Biology. The sequence of stages through which an individual organism passes from origin as a zygote to death, or through which the members of a species pass from the production of gametes by one generation to that by the next. ΘΚΠ the world > life > biology > biological processes > development, growth, or degeneration > [noun] > life cycle life cycle1855 life history1856 the world > life > biology > study > [noun] > natural history > work of Physiologeta1300 history1534 natural history1534 life cycle1855 life history1856 nature notes1890 1855 R. Owen Lect. Compar. Anat. Invertebr. Animals (ed. 2) iv. 78 The dropsical enlargement of the encysted cestoid larva proceeds to such an extent as to make it highly improbable that they can carry out the future phases of their proper life-cycle. 1873 Monthly Microsc. Jrnl. 10 57 Thus the entire life cycle of this form is seen. 1913 W. E. Kellicott Textbk. Gen. Embryol. v. 209 This is based to a large extent upon the phenomena of the Protozoan life cycle. 1967 M. E. Hale Biol. Lichens ii. 27 The life cycle of fungi is completed when the vegetative thallus produces fruiting bodies that contain spores. 1983 Bee Craft 65 92 The leaflet..is well illustrated in colour and explains succinctly the life cycle of the Varroa mite. 2005 Independent 23 Sept. 42/3 Daddy-longlegs are only a nuisance in one phase of their life cycle. Their larvae are leatherjackets, those reddish-brown nuggetty things you find in the soil. b. The course of human existence from birth, through childhood and maturity, to old age and death; spec. one that is characteristic of a particular culture. ΘΚΠ the world > life > source or principle of life > [noun] > course or span of life life-dayOE year-daysOE timeOE dayOE lifeOE life's timeOE livelihoodOE yearOE lifetimea1300 life-whilea1300 for (also to) term of (a person's) lifea1325 coursec1384 livingc1390 voyage1390 agea1398 life's dayc1425 thread1447 racea1450 living daysc1450 natural life1461 lifeness1534 twist1568 leasec1595 span1599 clew1615 marcha1625 peregrination1653 clue1684 stamen1701 life term1739 innings1772 lifelong1814 pass-through1876 inning1885 natural1891 life cycle1915 puff1967 1915 Amer. Anthropologist 17 617 The exhibits cover, in as many halls, man's evolution, the life cycle of man, man's variations, and human pathology. 1949 M. Mead Male & Female xvi. 339 Here he is, only in middle age, and his life is over—..no new fields to conquer... So while he is not out of a job..the very nature of the life-cycle in America is such that he feels like an old man. 1959 G. D. Mitchell Sociol. vi. 103 Religion is mostly important to mankind at times of personal crisis or when new and socially significant stages of the life-cycle are approached: at birth, initiation, marriage, death. 1982 A. Gould & D. Siegel Unorthodox Bk. Jewish Rec. & Lists (1989) ix. 108 The Jewish Life Cycle..Birth..Nachas..Circumcision/Naming..Baby bonds with grandparents..Baby bonds with parents..Dancing lessons..Shopping..Piano lessons..First credit card..First trip to orthodontist..Bar/Bat Mitzvah..Marriage..Children..Grandparenthood..Nachas..Death. 2004 N.Y. Times (National ed.) 31 Oct. ii. 24/1 Much of the American life cycle, from totdom to codgerdom, plays out in cathode glow, and training for a lifetime of visual entertainment—the Zen of Watching—starts early. 2. In extended use: a course or evolution from a beginning, through development and productivity, to decay or ending. (Frequently in economic or business contexts.) ΚΠ 1938 H. Read Coll. Ess. Lit. Crit. i. i. 19 The classical and romantic periods are related to each other in a ‘life-cycle’ which is the recurring cycle of the growth, maturity, and decay of culture. 1941 Amer. Econ. Rev. 31 401 During the early phases of the life cycle of industries and corporations, productivity of the capital investment is high, but as the cycle continues a period of decadence sooner or later sets in. 1965 H. I. Ansoff Corporate Strategy (1968) ii. 31 Objectives..will vary from one type of firm to another depending on the firm's past profitability, its prospects, and its stage in the life cycle. 1969 J. Argenti Managem. Techniques 70 Many product life-cycles are declining. 1971 Nature 12 Feb. 486/2 The photo-oxidation of sulphur dioxide to sulphuric acid in the atmosphere is relevant both to the formation of aerosols in polluted air and to the life cycle of sulphur compounds in the atmosphere. 2007 Sharp Edge June 69/2 (advt.) If you look at the lifecycle of your relation with a customer there are a number of key stages it moves through. 3. Usually as one word. Also with capital initial. Chiefly U.S. A proprietary name for: an exercise bicycle, esp. one incorporating a programmable computer which enables it to simulate different cycling conditions, and a monitor which displays the user's heart rate, etc. ΘΚΠ society > leisure > sport > types of sport or game > gymnastics > exercise > [noun] > equipment > others trochus1706 troque1743 chamber horse1747 dumb-bell1785 stock1831 rowing machine1848 chest-expander1850 weights1862 stationary bicycle1883 punching bag1888 medicine ball1895 punching ball1895 stationary bike1899 kettlebell1908 rower1933 Exercycle1936 exercise bicycle1937 exercise bike1946 exercise cycle1952 roller1970 life cycle1973 multi-gym1976 gut-buster1983 roller1992 1973 Los Angeles Times 17 June xi. 4/6 (advt.) Just 12 minutes a day on the amazing Lifecycle will healthfully condition your heart and lungs. 1989 Sporting News (Nexis) 17 July 60 Wilson has been exercising daily on a lifecycle in his home gym and believes he's in the best shape of his career. 1994 E. Ehm She should Talk i. 14 I push myself in my workouts. I have to ride the Life Cycle at a certain level for a certain length of time. 2000 You & your Wedding Mar.–Apr. (Honeymoon Destinations 2000 Suppl.) 25/3 The Health Lounge offers top-class facilities, including stairmasters, treadmills, lifecycles and free weights. Compounds General attributive, as life-cycle analysis, life-cycle costing, life-cycle model, life-cycle stage, etc. ΚΠ 1909 Elem. School Teacher 10 160 Another life-cycle study used in this grade is that of the moth or butterfly. 1927 Jrnl. Hygiene 26 457 There is no published evidence..as to the duration of the life cycle stages of Calliphora vomitoria. 1936 Social Forces 15 225/2 The life-cycle analysis of family living has opened up an important field in the method of family study. 1957 Amer. Econ. Rev. 47 922 Returning now to the dynamic aspects of the life-cycle model, we may develop the implications of our hypotheses about the growth of debt in a more general form. 1967 B. S. Cohn in P. Bohannan Law & Warfare 145 The general rule is that, when a household is celebrating a life-cycle rite,..at least one adult male..from every other household in the hamlet is invited. 1968 Public Admin. Rev. 28 463/1 A study of the relatively new management concepts in the procurement of major weapons systems such as..life cycle costing. 1977 J. L. Harper Population Biol. Plants xxi. 655 The life cycle strategy is likely in such a case to be influenced by the optimal allocation of sodium between parents and offspring. 1984 Acad. of Managem. Rev. 9 228/1 The life cycle model clearly reveals the psychologist's fallacy: continuing a project in the face of a financial setback is not always irrational. 1985 M. R. Haines in A. S. Rossi Gender & Life Course iii. 47 One method of describing the life cycle has been to use the age of head of household as a proxy for life-cycle stage. 1992 en Route Nov. 46/1 Developing a business in a still-nascent industry is something..standard life-cycle theories cannot explain. 1997 Housing Agenda Sept. (Finance Suppl.) 4/2 They commissioned a study of typical major repair costs, and projected them using life-cycle costing. 2001 S. Roaf et al. Ecohouse (2002) ii. 46 This cradle-to-grave approach is called ‘life cycle analysis’. It is used as a way of assessing the total impact of any building and shows the importance of the building's lifespan. This entry has been updated (OED Third Edition, September 2009; most recently modified version published online March 2022). < n.1855
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