What is life?

  • (noun): An account of the series of events making up a person's life.
    Synonyms: biography, life story, life history
    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:

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 ...
Faith in Other Spiritual Traditions - Meher Baba
... kinds of faith (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 ...
Widukind - Life
... Very little is known about Widukind's life ... There are no sources about Widukind's life or death after his baptism ... has been identified as a likely location where Widukind may have spent the rest of his life ...
Ecology - Relation To The Environment
... dynamically interlinked, and contains resources for organisms at any time throughout their life cycle ... and internal environments, however, is an abstraction parsing life and environment into units or facts that are inseparable in reality ... of cause and effect between the environment and 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 ... 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 ...

More definitions of "life":

  • (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): Living things collectively.
    Example: "The oceans are teeming with 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
  • (noun): A prison term lasting as long as the prisoner lives.
    Example: "He got life for killing the guard"
    Synonyms: life sentence
  • (noun): A living person.
    Example: "His heroism saved a life"
  • (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): A characteristic state or mode of living.
    Example: "Social life"; "city life"; "real 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): 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
  • (noun): A motive for living.
    Example: "Pottery was his life"
  • (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"

Famous quotes containing the word life:

    Sometimes I think of life as a process where everybody is discouraging and taking everybody else down a peg or two.
    Brenda Ueland (1891–1985)

    Boswell, when he speaks of his Life of Johnson, calls it my magnum opus, but it may more properly be called his opera, for it is truly a composition founded on a true story, in which there is a hero with a number of subordinate characters, and an alternate succession of recitative and airs of various tone and effect, all however in delightful animation.
    James Boswell (1740–1795)

    The Spirit of Place [does not] exert its full influence upon a newcomer until the old inhabitant is dead or absorbed. So America.... The moment the last nuclei of Red [Indian] life break up in America, then the white men will have to reckon with the full force of the demon of the continent.
    —D.H. (David Herbert)