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Multi-word Results
| heavy hydrogen |
an isotope of hydrogen with a mass number greater than one; deuterium. |
| hydrogen bomb |
a very powerful type of bomb. When its hydrogen atoms are forced together under great heat and pressure, they release energy in a huge explosion. |
| hydrogen ion |
the positive ion of a hydrogen atom whose electron has been removed, as in acids. |
| hydrogen peroxide |
an unstable compound of hydrogen and oxygen whose water solution is used mostly as an antiseptic or bleach. |
| hydrogen sulfide |
a poisonous, colorless gas that has the odor of rotten eggs and is used mostly in chemical manufacturing and metallurgy. |
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