hydrogen (háy•dro•dyén)
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- element (atomic number 1, sym-bol H) na walang kulay, walang amoy, nasusunog, at tíla gas
hydrogen peroxide (háy•dro•dyén pé•rok•sáyd)
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- likidong solution (H2O2) na walang kulay, malangis, at karaniwang ginagamit na antiseptiko at ahenteng pangku-lá.
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