What is life?

  • (noun): The condition of living or the state of being alive.
    Example: "While there's life there's hope"; "life depends on many chemical and physical processes"
    Synonyms: animation, living, aliveness
    See also — Additional definitions below

Life

Life (cf. biota) is a characteristic that distinguishes objects that have signaling and self-sustaining processes from those that do not, either because such functions have ceased (death), or else because they lack such functions and are classified as inanimate. Biology is the science concerned with the study of life.

Read more about Life.

Some articles on life:

Half-life in Biology and Pharmacology
... A biological half-life or elimination half-life is the time it takes for a substance (drug, radioactive nuclide, or other) to lose one-half of its pharmacologic, physiologic, or radiological activity ... In a medical context, the half-life may also describe the time that it takes for the concentration in blood plasma of a substance to reach one-half of its steady-state value (the "plasma half-life") ... For example, the biological half-life of water in a human being is about seven to 14 days, though this can be altered by his/her behavior ...
International Space Station - Station Systems - Life Support
... The Russian orbital segment's life support systems are contained in the Service Module Zvezda ... The MLM Nauka laboratory has a complete set of life support systems ...
Ecology - Relation To The Environment
... resources for organisms at any time throughout their life cycle ... internal environments, however, is an abstraction parsing life and environment into units or facts that are inseparable in reality ... interpenetration of cause and effect between the environment and life ...
Widukind - Life
... Very little is known about Widukind's life ... There are no sources about Widukind's life or death after his baptism ... Abbey has been identified as a likely location where Widukind may have spent the rest of his life ...
Faith in Other Spiritual Traditions - Meher Baba
... (i) faith in oneself, (ii) faith in the Master and (iii) faith in life ... Faith is so indispensable to life that unless it is present in some degree, life itself would be impossible ... It is because of faith that cooperative and social life becomes possible ...

More definitions of "life":

  • (noun): Living things collectively.
    Example: "The oceans are teeming with life"
  • (noun): A characteristic state or mode of living.
    Example: "Social life"; "city life"; "real life"
  • (noun): A prison term lasting as long as the prisoner lives.
    Example: "He got life for killing the guard"
    Synonyms: life sentence
  • (noun): The period during which something is functional (as between birth and death).
    Example: "The battery had a short life"; "he lived a long and happy life"
    Synonyms: lifetime, lifespan
  • (noun): The course of existence of an individual; the actions and events that occur in living.
    Example: "He hoped for a new life in Australia"; "he wanted to live his own life without interference from others"
  • (noun): The period between birth and the present time.
    Example: "I have known him all his life"
  • (noun): The period from the present until death.
    Example: "He appointed himself emperor for life"
  • (noun): A living person.
    Example: "His heroism saved a life"
  • (noun): The experience of living; the course of human events and activities.
    Example: "He could no longer cope with the complexities of life"
    Synonyms: living
  • (noun): A motive for living.
    Example: "Pottery was his life"
  • (noun): The organic phenomenon that distinguishes living organisms from nonliving ones.
    Example: "There is no life on the moon"
  • (noun): Animation and energy in action or expression.
    Example: "It was a heavy play and the actors tried in vain to give life to it"
    Synonyms: liveliness, spirit, sprightliness

Famous quotes containing the word life:

    One should not confuse the craving for life with endorsement of it.
    Elias Canetti (b. 1905)

    There is something servile in the habit of seeking after a law which we may obey. We may study the laws of matter at and for our convenience, but a successful life knows no law.
    Henry David Thoreau (1817–1862)

    Coming to terms with the rhythms of women’s lives means coming to terms with life itself, accepting the imperatives of the body rather than the imperatives of an artificial, man-made, perhaps transcendentally beautiful civilization. Emphasis on the male work-rhythm is an emphasis on infinite possibilities; emphasis on the female rhythms is an emphasis on a defined pattern, on limitation.
    Margaret Mead (1901–1978)