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hydrogen Meaning & Definition

/ˈhaɪdɹəd͡ʒ(ə)n/

What Does Hydrogen Mean?

Hydrogen is a noun that means The lightest chemical element (symbol H), with an atomic number of 1 and atomic weight of 1.008. It can also mean An atom of this element.

Hydrogen: Key Facts

Part of speechnoun
Pronunciation/ˈhaɪdɹəd͡ʒ(ə)n/
Synonymsatomic number 1, h and element 1
Pluralhydrogens

Hydrogen Definition (Noun)

  1. The lightest chemical element (symbol H), with an atomic number of 1 and atomic weight of 1.008.

    Our professor then reminded us that a hydrogen ion is merely a proton, and thus we should think about acid-base theory as we consider this problem further.

  2. An atom of this element.

    Each carbon of the ring has one hydrogen attached except for the fourth one, which is bonded to a substituent.

  3. Molecular hydrogen (sense 1; symbol H2), a colourless, odourless and flammable gas at room temperature.

    A large tank of hydrogen constituted most of the bulk of that rocket.

  4. A molecule of this molecular species.
  5. Synonym of protium (“the lightest and most common isotope of hydrogen (sense 1; symbol H, H, or 11H), as contrasted with deuterium and tritium”).

    Both hydrogen and deuterium are present in every glass of water that you drink, but the amount of deuterium is rather small.

Noun

  1. The lightest chemical element (symbol H), with an atomic number of 1 and atomic weight of 1.00794.
  2. Molecular hydrogen (H2), a colourless, odourless and flammable gas at room temperature.
  3. An atom of the element.
  4. A sample of the element.

Synonyms of Hydrogen

atomic number 1helement 1hydrogen airhydrogen gashydrogeniuminflammable airwaterstuffdihydrogenE949hydrogen hydridepackaging agent
Hydrogen synonyms and antonyms →

Hydrogen in a Sentence

Our professor then reminded us that a hydrogen ion is merely a proton, and thus we should think about acid-base theory as we consider this problem further.

Each carbon of the ring has one hydrogen attached except for the fourth one, which is bonded to a substituent.

A large tank of hydrogen constituted most of the bulk of that rocket.

Both hydrogen and deuterium are present in every glass of water that you drink, but the amount of deuterium is rather small.

Word Forms & Grammar

hydrogen (countable and uncountable, plural hydrogens)

Origin of Hydrogen

Origin 1: Borrowed from French hydrogène (“hydrogen”), coined by the French chemists Louis-Bernard Guyton de Morveau (1737–1816) and Antoine Lavoisier (1743–1794) from hydro- (prefix meaning ‘water’) + -gène (suffix denoting a producer of something),[1] from the fact that water is produced as a compound when hydrogen is oxidized.

Origin 2: By surface analysis, hydro- (prefix meaning ‘water’) +‎ -gen (suffix denoting a producer of something).

Quick Answers About Hydrogen

What part of speech is hydrogen?

Hydrogen is a noun.

What is another word for hydrogen?

Words with a similar meaning to hydrogen include atomic number 1, h and element 1. See the full list of hydrogen synonyms and antonyms.

What is the plural of hydrogen?

The plural of hydrogen is hydrogens.

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