life span
Birth to death
Life span is the length of time an organism lives or is expected to live: The average human life span has increased dramatically over the past century.
It extends to how long things remain functional or relevant: the life span of a battery, the life span of a trend.
Also spelled lifespan.
Gradual functional decline with age
- elderlyAdvanced in age
- retirementLeaving the workforce permanently
- gerontologyScientific study of senescence
- centenarianPerson over ninety-nine
octogenarian · nonagenarian · supercentenarian · longevity · mortality · geriatric · senior · golden years
Duration of existence
- yearsTwelve-month spans
- decadesTen-year periods
- centuryHundred-year span
- timeframeDesignated duration for something
chronological age · biological age · expectancy · brevity · ephemeral · fleeting · prolonged · extended
Earliest period of life
- childhoodLife's earliest phase
- adolescenceTeenage developmental stage
- pubertySexual development stage
- adulthoodState of being grown
middle age · old age · maturation · development · juvenile · toddler · teenager · youth
State of eventual death
- reproductionCopying or procreation
- generationAge-defined peer group
- offspringBiological descendants produced
- senescenceGradual functional decline with age
telomeres · cellular · genetic · hereditary · species · organism · mammalian · human
senescence
Gradual functional decline with age
- elderlyAdvanced in age
- retirementLeaving the workforce permanently
- gerontologyScientific study of senescence
centenarian · octogenarian · nonagenarian · supercentenarian · longevity · mortality · geriatric · senior · golden years · twilight years
longevity
Duration of existence
timeframe · chronological age · biological age · expectancy · brevity · ephemeral · fleeting · prolonged · extended · shortened
infancy
Earliest period of life
- childhoodLife's earliest phase
- adolescenceTeenage developmental stage
- pubertySexual development stage
adulthood · middle age · old age · maturation · development · juvenile · toddler · teenager · youth · prime
mortality
State of eventual death
- reproductionCopying or procreation
- generationAge-defined peer group
- offspringBiological descendants produced
senescence · telomeres · cellular · genetic · hereditary · species · organism · mammalian · human · animal
- agingaging process, aging body, biological age, aging workforce, aging parents
- biographybirth, death date, autobiography, biography, birthplace
- "life" phraseslifeblood, nightlife, wildlife, lowlife, highlife
- fatedestiny, fate, kismet, Moira, fated
- Human Developmentgrowth, heredity, aging, genetics, puberty
- life stagesbaby, teenager, adult, childhood, adolescence
life spaninstant
Briefest unit of time
moment · split second · flash · blink of an eye · heartbeat
life spandeath
Cessation of life
mortality · oblivion · afterlife · demise · nonexistence