H2O
noun/ˌeɪtʃ ˌtuː ˈəʊ/
/ˌeɪtʃ ˌtuː ˈəʊ/
(also H2O)
[uncountable] (informal)- water (the chemical symbol, used in non-scientific contexts)
- A ten-minute shower uses 15 gallons of H2O.
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H2O
Definition of H2O noun from the Oxford Advanced Learner's Dictionary
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