Definitions for oxygenˈɒk sɪ dʒən

This page provides all possible meanings and translations of the word oxygen

Princeton's WordNetRate this definition:(0.00 / 0 votes)

  1. oxygen, O, atomic number 8(noun)

    a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust

GCIDERate this definition:(0.00 / 0 votes)

  1. Oxygen(n.)

    (Chem.) A colorless, tasteless, odorless, gaseous element of atomic number 8, occurring in the free state in the atmosphere, of which it forms about 23 per cent by weight and about 21 per cent by volume, being slightly heavier than nitrogen. Symbol O. Atomic weight 15.9994.

  2. Origin: [F. oxygne, from Gr. 'oxy`s sharp, acid + root of gi`gnesqai to be born. So called because originally supposed to be an essential part of every acid.]

WiktionaryRate this definition:(0.00 / 0 votes)

  1. oxygen(Noun)

    A chemical element (symbol O) with an atomic number of 8 and relative atomic mass of 15.9994.

  2. oxygen(Noun)

    Molecular oxygen (O), a colorless, odorless gas at room temperature.

  3. oxygen(Noun)

    A mixture of oxygen and other gases, administered to a patient to help him or her to breathe.

  4. oxygen(Noun)

    An atom of this element.

  5. Origin: Borrowed from oxygène (originally in the form principe oxygène, a variant of principe oxigine ‘acidifying principle’, suggested by Lavoisier), from ὀξύς + γένος, referring to oxygen's role in the formation of acids.

FreebaseRate this definition:(0.00 / 0 votes)

  1. Oxygen

    Oxygen is a chemical element with symbol O and atomic number 8. Its name derives from the Greek roots ὀξύς and -γόνος, because at the time of naming, it was mistakenly thought that all acids required oxygen in their composition. At standard temperature and pressure, two atoms of the element bind to form dioxygen, a colorless, odorless, tasteless diatomic gas with the formula O2. This substance is an important part of the atmosphere, and is necessary to sustain most terrestrial life. Oxygen is a member of the chalcogen group on the periodic table and is a highly reactive nonmetallic element that readily forms compounds with most elements except the noble gases Helium and Neon. Oxygen is a strong oxidizing agent and only fluorine has greater electronegativity. By mass, oxygen is the third-most abundant element in the universe, after hydrogen and helium and the most abundant element by mass in the Earth's crust, making up almost half of the crust's mass. Oxygen is too chemically reactive to remain a free element in Earth's atmosphere without being continuously replenished by the photosynthetic action of living organisms, which use the energy of sunlight to produce elemental oxygen from water. Free elemental O2 only began to accumulate in the atmosphere about 2.5 billion years ago about a billion years after the first appearance of these organisms. Diatomic oxygen gas constitutes 20.8% of the volume of air.

The Nuttall EncyclopediaRate this definition:(0.00 / 0 votes)

  1. Oxygen

    a colourless, inodorous gas which constitutes one-fifth in volume of the atmosphere, and which, in combination with hydrogen, forms water. It is the most widely diffused of all the elementary bodies, and an essential support to everything possessed of life.

U.S. National Library of MedicineRate this definition:(0.00 / 0 votes)

  1. Oxygen

    An element with atomic symbol O, atomic number 8, and atomic weight 16. It is the most abundant element on earth and essential for respiration.

British National Corpus

  1. Written Corpus Frequency

    Rank popularity for the word 'oxygen' in Written Corpus Frequency: #3520

  2. Nouns Frequency

    Rank popularity for the word 'oxygen' in Nouns Frequency: #1913

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