en

oxygen

1 [ˈɒk.sɪ.dʒən] substantive

EKI Combined Dictionary 2026

Last modified 22.09.2025

Meanings

värvuseta ja lõhnata gaas, mis kuulub õhu koostisse ja on hingamiseks ning põlemiseks tingimata vajalik, omadustelt mittemetall, keemiline element järjenumbriga 8

Translations

Good to know
et
Tähtsaim hapniku ühend on tema ühend vesinikuga – vesi (H2O).

Terminological databases

EKI terminibaas Esterm

ID 716438 Last modified 22.09.2025
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Domain inorganic chemistry
O
  • keemiliste elementide perioodilisussüsteemi VI rühma element, sümbol O (oxygenium)
  • colourless odourless gaseous element belonging to group 16 (formerly VIB) of the periodic table; a.n. 8; r.a.m. 15.9994; d. 1.429 g dm−3; m.p. –218.4°C; b.p. –183°C
    Good to know
    • It is the most abundant element in the earth’s crust (49.2% by weight) and is present in the atmosphere (28% by volume). ... The common form is diatomic (dioxygen, O2); there is also a reactive allotrope ozone (O3). Chemically, oxygen reacts with most other elements forming oxides.
hapnik
Usage examples
  • Nii maakoores kui elavates organismides leidub hapnikku kõigist elementidest kõige rohkem. Hapnikku esineb looduses mitme allotroopse teisendina. Lisaks tavalisele hapnikule ehk dihapnikule on olemas ka trihapnik ehk osoon.
oxygen
Usage examples
  • During respiration, animals and some bacteria take oxygen from the atmosphere and return to it carbon dioxide, whereas by photosynthesis, green plants assimilate carbon dioxide in the presence of sunlight and evolve free oxygen.
O symbol
oxygène
Sauerstoff
happi

Limnoloogia sõnastik

ID 459086 Last modified 11.07.2023
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Domain chemical nomenclature
hapnik preferred
oxygen preferred
oxígeno preferred
oxygène preferred
Sauerstoff preferred
кислород preferred

Meteoroloogia ja klimatoloogia terminibaas

ID 519471 Last modified 11.07.2023
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Domain atmosphere - climatology - meteorology - magnetosphereüldised mõisted
oxygen
O
  • keemiline element, õhnata ja värvuseta gaas, moodustab maapinnalähedases õhukihis massi järgi 23% õhu koosseisust
oxygen
O symbol

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