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| atomic energy |
the energy that is released by an atom in nuclear reactions such as fission or fusion. [1/2 definitions] |
| hydrogen bomb |
an extremely powerful bomb whose destructive energy comes from the fusion of hydrogen nuclei under intense heat and pressure, forming helium nuclei. |
| nuclear energy |
energy released from atomic nuclei, as in nuclear fission or fusion. |
| nuclear fusion |
the fusion of atomic nuclei into a more massive nucleus, accompanied by a release of energy, as in the explosion of a hydrogen bomb. |
| protostar |
a collapsing cloud of gas and dust that will become a star once nuclear fusion has begun. |
| sacrum |
in higher vertebrates, a bone that supports the dorsal wall of the pelvis, formed from the fusion of two or more basal vertebrae. |
| thermonuclear |
of, pertaining to, or resulting from the fusion of the nuclei of a gas at very high temperatures. [2 definitions] |
| wishbone |
a forked bone found in front of the breastbone of most birds, formed by the fusion of the clavicles, and sometimes used, when taken from a cooked fowl, to make wishes over. |
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