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hydrogen
Definitions
[ˈhʌɪdrədʒ(ə)n], (Noun)
Definitions:
- a colourless, odourless, highly flammable gas, the chemical element of atomic number 1
Phrases:
Origin
:
late 18th century: coined in French from Greek hudro- ‘water’ + -genēs (see -gen)
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definition by Oxford Dictionaries