Meanings
nounhydrogen peroxide (uncountable)
- uncountablechemistryA colourless liquid, H₂O₂, soluble in water, used as a mild antiseptic, bleaching agent (especially for bleaching hair), oxidizing agent and chemical reagent.
Synonyms & antonyms
nouna viscous liquid with strong oxidizing properties; a powerful bleaching agent; also used (in aqueous solutions) as a mild disinfectant and (in strong concentrations) as an oxidant in rocket fuels
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Synonym sets from Open English WordNet, CC BY 4.0.
Translations
Bulgarian кислоро́дна вода́
- кислоро́дна вода́ (kisloródna vodá)H2O2
Catalan peròxid d'hidrogen, aigua oxigenada
- peròxid d'hidrogenH2O2
- aigua oxigenadaH2O2
Chinese Cantonese 過氧化氫 /过氧化氢
- 過氧化氫 /过氧化氢 (gwo³ joeng⁵ faa³ hing¹)H2O2
Chinese Mandarin 過氧化氫 /过氧化氢
- 過氧化氫 /过氧化氢 (guòyǎnghuàqīng)H2O2
Czech peroxid vodíku
- peroxid vodíkuH2O2
Danish brintoverilte
- brintoverilteH2O2
Dutch waterstofperoxide, zuurstofwater
- waterstofperoxideH2O2
- zuurstofwaterH2O2
Esperanto oksigena akvo, hidrogena peroksido
- oksigena akvoH2O2
- hidrogena peroksidoH2O2
Finnish vetyperoksidi
- vetyperoksidiH2O2
French peroxyde d'hydrogène, eau oxygénée
- peroxyde d'hydrogèneH2O2
- eau oxygénéeH2O2
German Wasserstoffperoxid
- WasserstoffperoxidH2O2
Hebrew מֵי חַמְצָן
- מֵי חַמְצָן (mé khamtsán)H2O2
Hindi उदजन परूजारक
- उदजन परूजारक (udjan parūjārak)H2O2
Hungarian hidrogén-peroxid
- hidrogén-peroxidH2O2
Italian acqua ossigenata, perossido di idrogeno
- acqua ossigenataH2O2
- perossido di idrogenoH2O2
Japanese 過酸化水素
- 過酸化水素 (kasankasuiso)H2O2
Korean 과산화수소, 이산화수소
- 과산화수소 (gwasanhwasuso)H2O2
- 이산화수소 (isanhwasuso)H2O2
Malay hidrogen peroksida
- hidrogen peroksidaH2O2
Norwegian hydrogenperoksid
- hydrogenperoksidH2O2
Persian آب اکسیژنه, هیدروژن پراکسید
- آب اکسیژنه (âb oksižene)H2O2
- هیدروژن پراکسید (hidrožen perâksid)H2O2
Polish nadtlenek wodoru, woda utleniona
- nadtlenek wodoruH2O2
- woda utlenionaH2O2
- perhydrolH2O2
Portuguese peróxido de hidrogênio, peróxido de hidrogénio
- peróxido de hidrogênioH2O2
- peróxido de hidrogénioH2O2
- água oxigenadaH2O2
Romanian apă oxigenată
- apă oxigenatăH2O2
Russian пе́рекись водоро́да
- пе́рекись водоро́да (pérekisʹ vodoróda)H2O2
Slovak peroxid vodíka
- peroxid vodíkaH2O2
Spanish peróxido de hidrógeno, agua oxigenada
- peróxido de hidrógenoH2O2
- agua oxigenadaH2O2
Swedish väteperoxid
- väteperoxidH2O2
Tagalog agwa-oksihenada
- agwa-oksihenadaH2O2
Thai ไฮโดรเจนเพอร์ออกไซด์
- ไฮโดรเจนเพอร์ออกไซด์ (hai-droh-jayn per ók-sai)H2O2
Turkish hidrojen peroksit
- hidrojen peroksitH2O2
Ukrainian пере́кис во́дню, пероксид водню
- пере́кис во́дню (perékys vódnju)H2O2
- пероксид водню (peroksyd vodnju)H2O2
Vietnamese hydro peroxide, nước oxy già
- hydro peroxideH2O2
- nước oxy giàH2O2
Cite this entry
APA
hydrogen peroxide. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/hydrogen%20peroxide
MLA
“hydrogen peroxide.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/hydrogen%20peroxide. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “hydrogen peroxide,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/hydrogen%20peroxide.
Source: hydrogen peroxide on Wiktionary, CC BY-SA 4.0.