What does hydrogen mean?

Definitions for hydrogen
ˈhaɪ drə dʒənhy·dro·gen

Here are all the possible meanings and translations of the word hydrogen.

Princeton's WordNet

  1. hydrogen, H, atomic number 1(noun)

    a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe


  1. hydrogen(Noun)

    The lightest chemical element (symbol H) with an atomic number of 1 and atomic weight of 1.00794.

  2. hydrogen(Noun)

    Molecular hydrogen (H), a colourless, odourless and flammable gas at room temperature.

  3. hydrogen(Noun)

    An atom of the element.

  4. hydrogen(Noun)

    A sample of the element.

  5. Origin: From hydrogène, coined by Louis-Bernard Guyton de Morveau, from ὕδωρ + γεννάω.

Webster Dictionary

  1. Hydrogen(noun)

    a gaseous element, colorless, tasteless, and odorless, the lightest known substance, being fourteen and a half times lighter than air (hence its use in filling balloons), and over eleven thousand times lighter than water. It is very abundant, being an ingredient of water and of many other substances, especially those of animal or vegetable origin. It may by produced in many ways, but is chiefly obtained by the action of acids (as sulphuric) on metals, as zinc, iron, etc. It is very inflammable, and is an ingredient of coal gas and water gas. It is standard of chemical equivalents or combining weights, and also of valence, being the typical monad. Symbol H. Atomic weight 1

  2. Origin: [Hydro-, 1 + -gen: cf. F. hydrogne. So called because water is generated by its combustion. See Hydra.]


  1. Hydrogen

    Hydrogen is a chemical element with chemical symbol H and atomic number 1. With an atomic weight of 1.00794 u, hydrogen is the lightest element and its monatomic form is the most abundant chemical substance, constituting roughly 75% of the Universe's baryonic mass. Non-remnant stars are mainly composed of hydrogen in its plasma state. At standard temperature and pressure, hydrogen is a colorless, odorless, tasteless, non-toxic, nonmetallic, highly combustible diatomic gas with the molecular formula H2. Most of the hydrogen on Earth is in molecules such as water and organic compounds because hydrogen readily forms covalent compounds with most non-metallic elements. Hydrogen plays a particularly important role in acid–base chemistry with many reactions exchanging protons between soluble molecules. In ionic compounds, it can take a negative charge, or as a positively charged species H+. The latter cation is written as though composed of a bare proton, but in reality, hydrogen cations in ionic compounds always occur as more complex species. The most common isotope of hydrogen is protium with a single proton and no neutrons. As the simplest atom known, the hydrogen atom has been of theoretical use. For example, as the only neutral atom with an analytic solution to the Schrödinger equation, the study of the energetics and bonding of the hydrogen atom played a key role in the development of quantum mechanics.

Chambers 20th Century Dictionary

  1. Hydrogen

    hī′dro-jen, n. a gas which in combination with oxygen produces water, an elementary gaseous substance, the lightest of all known substances, and very inflammable.—adjs. Hy′dric, containing hydrogen; Hydrog′enous, containing hydrogen: produced by the action of water, as applied to rocks in opposition to those that are pyrogenous, formed by the action of fire. [A word coined by Cavendish (1766) from Gr. hydōr, water, and genēs, producing.]

U.S. National Library of Medicine

  1. Hydrogen

    Hydrogen. The first chemical element in the periodic table. It has the atomic symbol H, atomic number 1, and atomic weight 1. It exists, under normal conditions, as a colorless, odorless, tasteless, diatomic gas. Hydrogen ions are PROTONS. Besides the common H1 isotope, hydrogen exists as the stable isotope DEUTERIUM and the unstable, radioactive isotope TRITIUM.

The Standard Electrical Dictionary

  1. Hydrogen

    An element existing under all except the most extreme artificial conditions of pressure and cold as a gas. It is the lightest of known substances. Atomic weight, 1; molecular weight, 2; equivalent, 1; valency, 1; specific gravity, .0691-.0695. (Dumas & Boussingault.) It is a dielectric of about the same resistance as air. Its specific inductive capacity at atmospheric pressure is:     .9997 (Baltzman)   .9998 (Ayrton) Electro-chemical equivalent, .0105 milligram. The above is usually taken as correct. Other values are as follows: .010521 (Kohllrausch)   .010415 (Mascart) The electro-chemical equivalent of any element is obtained by multiplying its equivalent by the electro-chemical equivalent of hydrogen. The value .0105 has been used throughout this book.

Editors Contribution

  1. hydrogen

    A chemical element with a known symbol, atomic number and atomic weight.

    Hydrogen is used to create power and for various other purposes.

    Submitted by MC Harmonious on December 26, 2016

British National Corpus

  1. Written Corpus Frequency

    Rank popularity for the word 'hydrogen' in Written Corpus Frequency: #3805

  2. Nouns Frequency

    Rank popularity for the word 'hydrogen' in Nouns Frequency: #2682


  1. Chaldean Numerology

    The numerical value of hydrogen in Chaldean Numerology is: 5

  2. Pythagorean Numerology

    The numerical value of hydrogen in Pythagorean Numerology is: 6

Examples of hydrogen in a Sentence

  1. Debasish Mridha, M.D.:

    Imagination is more powerful than money or a hydrogen bomb.

  2. Yang Uk:

    Given the scale, it is hard to believe this is a real hydrogen bomb.

  3. Harlan Ellison:

    The two most common elements in the universe are Hydrogen and stupidity.

  4. Harlan Ellison.:

    The two most abundant things in the universe are hydrogen and stupidity.

  5. Frank Zappa:

    There is more stupidity then hydrogen in the universe and it has a longer shelf life.

Images & Illustrations of hydrogen

  1. hydrogenhydrogenhydrogen

Popularity rank by frequency of use


Translations for hydrogen

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"hydrogen." Definitions.net. STANDS4 LLC, 2019. Web. 20 Mar. 2019. <https://www.definitions.net/definition/hydrogen>.

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