Hydrogen

Definitions

1. The lightest chemical element (symbol H), with an atomic number of 1 and atomic weight of 1.008.
   countable, uncountable
2. An atom of this element.
   countable, uncountable
3. Molecular hydrogen (H₂), a colourless, odourless and flammable gas at room temperature.
   countable, uncountable
4. A molecule of this molecular species.
   countable, uncountable
5. The isotope hydrogen-1 (protium) (symbol H or ¹H), contrasting with deuterium and tritium.
   countable, uncountable
6. A sample of the element or molecule.
   countable, uncountable

Equivalents

21 more languages

العربيةالهيدروجينهيدروجين

Българскиводород

Bosanskihȉdrogēnvodikvodonikводоник+ 1 more

Češtinavodíkvodíkový

Ελληνικάυδρογόνο

Suomivetyvetyatomi

Galegohidróxeno

עבריתמימן

हिन्दीउदजनहाइड्रोजन

Hrvatskihȉdrogēnvodikvodonikводоник+ 1 more

Bahasa Indonesiahidrogen

한국어수소수소원자

Latinahydrogenium

Latviešuūdeņradis

Te Reo Māorihauwai

Polskiwodórwodoród

Српскиhȉdrogēnvodikvodonikводоник+ 1 more

Svenskaväte

Türkçehidrojenmüvellidülma

Українськаводневий

Tiếng Việthiđrokhinh

Examples

“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.”

“It was an enormous balloon filled with helium, that elemental gas forged from hydrogen in the nuclear furnace of the stars.”

“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.”

“Hydrogen is generally considered to be electronically the same as deuterium. […] In both PdHₓ and PdDₓ […] a resistivity maximum is found near 50 K.”

CEFR level