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  1. Life - Wikipedia

    Life is only known to exist on Earth but extraterrestrial life is thought probable. Artificial life is being simulated and explored by scientists and engineers.

  2. Life | Definition, Origin, Evolution, Diversity, & Facts | Britannica

    Jul 11, 2025 · Life is defined as any system capable of performing functions such as eating, metabolizing, excreting, breathing, moving, growing, reproducing, and responding to external …

  3. LIFE Definition & Meaning - Merriam-Webster

    The meaning of LIFE is the quality that distinguishes a vital and functional being from a dead body. How to use life in a sentence.

  4. LIFE | English meaning - Cambridge Dictionary

    LIFE definition: 1. the period between birth and death, or the experience or state of being alive: 2. for the whole…. Learn more.

  5. How did life originate? - Understanding Evolution

    Thus, the ability to copy the molecules that encode genetic information is a key step in the origin of life — without it, life could not exist. This ability probably first evolved in the form of an RNA …

  6. Life - definition of life by The Free Dictionary

    1. Of or relating to animate existence; involved in or necessary for living: life processes. 2. Continuing for a lifetime; lifelong: life partner; life imprisonment. 3. Using a living model as a …

  7. Life - New World Encyclopedia

    A difficult term to define, life can be considered the characteristic state of living organisms and individual cells, or that quality or property that distinguishes living organisms from dead …

  8. life - Wiktionary, the free dictionary

    4 days ago · life (usually uncountable, plural lives) (uncountable) The state of organisms preceding their death, characterized by biological processes such as metabolism and …

  9. Life (Stanford Encyclopedia of Philosophy)

    Nov 30, 2021 · A wide range of practices rely on competing conceptions of life: including artificial life, origins-of-life research, the search for life, and other projects described above.

  10. Life: Definition, Meaning, and Origin - US Dictionary

    Jul 19, 2023 · In the simplest terms, it refers to the state of being alive and living, distinguishing organisms from inanimate objects. Yet, the term also encompasses a much broader spectrum, …