gaseous

G2A1S1E1O1U1S1
US/ˈɡæsiəs/US/ˈɡæʃəs/UK/ˈɡeisiəs/

adjective

Relating to, or existing as gas (matter in an intermediate state between liquid and plasma).

“gaseous state”

Similar
aeriformaereousaerialairyetherealpneumaticvaporlikevaporous
Opposite
nongaseousfluidicsolidliquid
OriginEnglish gas ← Dutch gas ← Ancient Greek χάος (kháos) →
Less commonScrabble 8
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Meanings

adjectivegaseous (comparative more gaseous, superlative most gaseous)

comparative more gaseous · superlative most gaseous

  1. Relating to, or existing as gas (matter in an intermediate state between liquid and plasma).

    gaseous state

    4 more examples

    gaseous emissions

    gaseous substance

    At room temperature, oxygen remains in a gaseous state.

    The mixture produced a gaseous vapor when heated.

  2. Of a liquid containing bubbles: gassy.
  3. Lacking substance or solidity; tenuous.

    Her gaseous explanations left everyone confused.

Synonyms & antonyms

Similar
aeriformaereousaerialairyetherealpneumaticvaporlikevaporouswafty
Opposite
nongaseousfluidicsolid
Narrower
evaporablenebulousvolatile

adjectiveexisting as or having characteristics of a gas

Similar
aeriformairlikeaerosolizedaerosolisedevaporatedgasifiedvaporizedvapourised
Opposite
solidliquid
Also see
aeriformaerosolizedairlikeairyetherealgasifiedgassedgassypneumaticvaporificvaporousvapourish

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Proto-Indo-European*ǵʰeh₂-
  2. Ancient Greekχαῦνος (khaûnos)
  3. Ancient Greekχάος (kháos)
  4. Dutchgas
  5. Englishgas
  6. Englishgaseous

From gas + -eous.

Full word history & related roots →

Translations

Arabic غازي, غازية
  • غازي (ḡāzī)relating to, or existing as, gas
  • غازية (ḡāziyya)relating to, or existing as, gas
  • غازي (ḡāzī)of a liquid containing bubbles: gassy
  • غازية (ḡāziyya)of a liquid containing bubbles: gassy
Bulgarian газов, газообразен
  • газов (gazov)relating to, or existing as, gas
  • газообразен (gazoobrazen)relating to, or existing as, gas
  • гази́ран (gazíran)of a liquid containing bubbles: gassy
Catalan gasós, gasós
  • gasósrelating to, or existing as, gas
  • gasósof a liquid containing bubbles: gassy
Chinese Mandarin 氣體的 /气体的
  • 氣體的 /气体的 (qìtǐ de)relating to, or existing as, gas
Danish gasformig, luftformig
  • gasformigrelating to, or existing as, gas
  • luftformigrelating to, or existing as, gas
  • gasholdigof a liquid containing bubbles: gassy
  • kulsyreholdigof a liquid containing bubbles: gassy
Esperanto gasa
  • gasarelating to, or existing as, gas
Finnish kaasumainen, kupliva
  • kaasumainenrelating to, or existing as, gas
  • kuplivaof a liquid containing bubbles: gassy
  • kaasupitoinenof a liquid containing bubbles: gassy
French gazeux, gazeux
  • gazeuxrelating to, or existing as, gas
  • gazeuxof a liquid containing bubbles: gassy
German gasförmig, gashaltig
  • gasförmigrelating to, or existing as, gas
  • gashaltigof a liquid containing bubbles: gassy
  • kohlensäurehaltigof a liquid containing bubbles: gassy
Greek αεριώδης, αεριούχος
  • αεριώδης (aeriódis)relating to, or existing as, gas
  • αεριούχος (aerioúchos)of a liquid containing bubbles: gassy
Hungarian gáz-halmazállapotú, gáznemű
  • gáz-halmazállapotúrelating to, or existing as, gas
  • gázneműrelating to, or existing as, gas
Irish gásach, gásach
  • gásachrelating to, or existing as, gas
  • gásachof a liquid containing bubbles: gassy
Italian gassoso
  • gassosorelating to, or existing as, gas
Japanese 気体の, ガス状
  • 気体の (kitai no)relating to, or existing as, gas
  • ガス状 (gasujou)relating to, or existing as, gas
Korean 기체의
  • 기체의 (giche'ui)relating to, or existing as, gas
Norwegian Bokmål gassformig
  • gassformigrelating to, or existing as, gas
Polish gazowy, gazowany
  • gazowyrelating to, or existing as, gas
  • gazowanyof a liquid containing bubbles: gassy
Portuguese gasoso, gasoso
  • gasosorelating to, or existing as, gas
  • gasosoof a liquid containing bubbles: gassy
  • gaseificadoof a liquid containing bubbles: gassy
Romanian gazos
  • gazosrelating to, or existing as, gas
Russian га́зовый, газообра́зный
  • га́зовый (gázovyj)relating to, or existing as, gas
  • газообра́зный (gazoobráznyj)relating to, or existing as, gas
  • газиро́ванный (gaziróvannyj)of a liquid containing bubbles: gassy
Spanish gaseoso, gaseoso
  • gaseosorelating to, or existing as, gas
  • gaseosoof a liquid containing bubbles: gassy
Turkish gaz halinde, gazlı
  • gaz halinderelating to, or existing as, gas
  • gazlıof a liquid containing bubbles: gassy
Ukrainian га́зовий, газоподі́бний
  • га́зовий (házovyj)relating to, or existing as, gas
  • газоподі́бний (hazopodíbnyj)relating to, or existing as, gas
  • газо́ваний (hazóvanyj)of a liquid containing bubbles: gassy

Rhymes & wordplay

Rhymes with gaseous

spacioustenaciousgraciouscretaceousherbaceousaudaciousCassiusefficaciousvoraciousvivaciousfallaciouscarbonaceoussebaceousvexatiousflirtatiouscurvaceousostentatioussalaciousrapaciouscapacioussagaciouspugnaciousloquaciousmendacious
All rhymes →
Cite this entry
APA

gaseous. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/gaseous

MLA

“gaseous.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/gaseous. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “gaseous,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/gaseous.

Source: gaseous on Wiktionary, CC BY-SA 4.0.