What is life?

  • (noun): A living person.
    Example: "His heroism saved a life"
    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:

Ecology - Relation To The Environment
... resources for organisms at any time throughout their life cycle ... external and internal environments, however, is an abstraction parsing life and environment into units or facts that are inseparable in reality ... There is an interpenetration of cause and effect between the environment and 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 ...
Widukind - Life
... Very little is known about Widukind's life ... There are no sources about Widukind's life or death after his baptism ... as a likely location where Widukind may have spent the rest of his life ...
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 ... When life is burdened with unjustified fear of one another it becomes cramped and restricted...Faith in the Master becomes all-important because it nourishes and sustains faith in oneself and faith in ...
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 ...

More definitions of "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 from the present until death.
    Example: "He appointed himself emperor for life"
  • (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): 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 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 period between birth and the present time.
    Example: "I have known him all his life"
  • (noun): Living things collectively.
    Example: "The oceans are teeming with life"
  • (noun): A motive for living.
    Example: "Pottery was his 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 characteristic state or mode of living.
    Example: "Social life"; "city life"; "real 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): The organic phenomenon that distinguishes living organisms from nonliving ones.
    Example: "There is no life on the moon"

Famous quotes containing the word life:

    If youth is the period of hero-worship, so also is it true that hero-worship, more than anything else, perhaps, gives one the sense of youth. To admire, to expand one’s self, to forget the rut, to have a sense of newness and life and hope, is to feel young at any time of life.
    Charles Horton Cooley (1864–1929)

    Do you know, Valerio, that even the least among all humans is so great that life is far too short to love him?
    Georg Büchner (1813–1837)

    It would be some advantage to live a primitive and frontier life, though in the midst of an outward civilization, if only to learn what are the gross necessaries of life and what methods have been taken to obtain them.
    Henry David Thoreau (1817–1862)