H2O | Meaning, Definition In Cambridge English Dictionary

Meaning of H2O in English H2Onoun [ U ] uk /ˌeɪtʃ.tuːˈəʊ/ us /ˌeɪtʃ.tuːˈoʊ/ Add to word list Add to word list the chemical symbol for water; used to refer to the substance water: H2O means that each water molecule contains one oxygen and two hydrogen atoms. The map shows where you can get some H2O when you're out running. The more scientists examine H2O, the stranger it starts to seem.

• Water is the only substance on Earth whose chemical formula has entered the vernacular. We all know H2O, even if we don’t understand precisely what it means.
• Two scientists walk into a bar. One says, "I'll have some H2O."

Chemicals, chemical compounds & gases

• acrolein
• acrylamide
• activated charcoal
• adenine
• agglomerate
• butane
• carbon monoxide
• chlorophyll
• choline
• chromium picolinate
• cinnabar
• CO2
• copper sulphate
• iodine solution
• potassium permanganate
• potassium sorbate
• propanone
• propylene glycol
• ptomaine
• sulphuric acid

See more results » (Definition of H2O from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press) What is the pronunciation of H2O?

Translations of H2O

in Chinese (Traditional) 水的分子式，水… See more in Chinese (Simplified) 水的分子式，水… See more in Spanish H₂O, agua… See more Need a translator?

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gyrus H, h H-back H-bomb H2O ha ha ha ha'porth haar {{#randomImageQuizHook.filename}} {{#randomImageQuizHook.isQuiz}} Test your vocabulary with our fun image quizzes Try a quiz now {{/randomImageQuizHook.isQuiz}} {{^randomImageQuizHook.isQuiz}} {{/randomImageQuizHook.isQuiz}} {{/randomImageQuizHook.filename}}

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