Hydrogen Meaning

/ˈhaɪdɹəd͡ʒ(ə)n/
C1

Definition, CEFR level C1, pronunciation, examples, and quiz.

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

nounThe lightest chemical element (symbol H), with an atomic number of 1 and atomic weight of 1.008., An atom of this element.

This substance is mostly composed of hydrogen and oxygen.
The chemical symbol H indicates hydrogen.
Hydrogen and oxygen combine to form water.
CEFR Practice Quiz
The sun fuses ____ atoms to create helium and release vast energy.
CEFR Practice Quiz (Alternate)
Lightweight ____ is the most abundant and simple chemical element in the entire universe.

Etymology tree Proto-Indo-European *wed- Proto-Indo-European *-r̥ Proto-Indo-European *wódr̥ Proto-Hellenic *údōr Ancient Greek ῡ̆̔́δωρ (hū̆́dōr) Ancient Greek ὑδρο- (hudro-)lbor. French hydro- Proto-Indo-European *ǵenh₁- Proto-Indo-European *-os Proto-Indo-European *ǵénh₁os Proto-Hellenic *génos Ancient Greek γένος (génos) Proto-Indo-European *-os Proto-Indo-European *-ēs Ancient Greek -ης (-ēs) Ancient Greek -γενής (-genḗs)lbor. French -gène French hydrogènebor. English hydrogen 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), from the fact that water is produced as a compound when hydrogen is oxidized. * The prefix hydro- is borrowed from Ancient Greek ῠ̔δρο- (hŭdro-), from ῡ̆̔́δωρ (hū̆́dōr, “water”), ultimately from Proto-Indo-European *wed- (“water”). * The suffix -gène is borrowed from Ancient Greek -γενής (-genḗs, suffix meaning ‘born in a certain condition or place’), from γένος (génos, “descendant, offspring; race; etc.”) (ultimately from Proto-Indo-European *ǵenh₁- (“to beget, produce; to give birth”)) + -ης (-ēs, suffix forming some third-declension adjectives). By surface analysis, hydro- (prefix meaning ‘water’) + -gen (suffix denoting a producer of something).

"The ignis fatuus or Jack a lantern, ſo frequently alluded to by poets, is ſuppoſed to originate from the inflammable air, or Hydrogene, given up from moraſſes; […]" — 1791, [Erasmus Darwin], “Canto I”, in The Botanic Garden; a Poem, in Two Parts. […], London: J[oseph] Johnson, […], →OCLC, part I (The Economy of Vegetation), footnote, page 18:
"But my Leech—a leech / Fit to suck blood, with lubricous round rings, / Capaciously expatiative, which make / His little body like a red balloon, / As full of blood as that of hydrogen, / Sucked from men's hearts; […]" — 1820, Sophocles, “Œdipus Tyrannus; or, Swellfoot the Tyrant. A Tragedy, in Two Acts. […]”, in Percy Bysshe Shelley, transl., edited by [Mary] Shelley, The Poetical Works of Percy Bysshe Shelley. […], new edition, London: Edward Moxon […], published 1840, →OCLC, Act I, page 184:
"Water is the sole product of the combustion of hydrogen gas. For this important fact we are indebted to Mr. [Henry] Cavendish. He demonstrated it by burning oxygen and hydrogen gases in a dry glass vessel, when a quantity of pure water was generated exactly equal in weight to that of the gases which had disappeared." — 1827, Edward Turner, “Section IV. Hydrogen.”, in Elements of Chemistry: Including the Recent Discoveries and Doctrines of the Science, Edinburgh: […] William Tait, […]; and Charles Tait, […], part II (Inorganic Chemistry), page 160:
"It was an enormous balloon filled with helium, that elemental gas forged from hydrogen in the nuclear furnace of the stars, first step along the way in the generation of multiplicity and variety of matter in the universe, including our selves and all our thoughts." — 1997, Ian McEwan, chapter 1, in Enduring Love, [United Kingdom]: The Softback Preview, →OCLC, page 3:
"Water occupies an intermediate position and shows tendencies both to add and give up hydrogen, which are nearly balanced. Then, in terms of the Lewis theory, a free pair of electrons on one water molecule might be able to exert sufficient force on a hydrogen held by a pair of electrons on another water molecule to bind the two molecules together." — 1920 July, Wendell M[itchell] Latimer, Worth H. Rodebush, “Polarity and Ionization from the Standpoint of the Lewis Theory of Valence”, in Arthur B. Lamb, editor, The Journal of the American Chemical Society, volume XLII, number 7, Easton, Pa.: Eschenbach Printing Company [for the American Chemical Society], →ISSN, →OCLC, page 1431:

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CEFR Practice Quiz
The sun fuses ____ atoms to create helium and release vast energy.
CEFR Practice Quiz (Alternate)
Lightweight ____ is the most abundant and simple chemical element in the entire universe.

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