How to pronounce“crack”in English
- In a nuclear fission reactor, you put enough of this fissile material, uranium or plutonium, together such that as these unstable molecules, these unstable atoms
crack open and break apart, they release heat, that the component parts of those are actually quite hot. And so not only are the component parts that the uranium breaks into, and it's a whole spectrum of different atoms and atomic nuclei,
and it's a whole spectrum of different atoms and atomic nuclei, are hot, but it also releases neutrons.
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Definitions of “crack”
To form cracks.
“It's been so dry, the ground is starting to crack.”
To break apart under force, stress, or pressure.
“When I tried to stand on the chair, it cracked.”
A thin and usually jagged space opened in a previously solid material.
“A large crack had formed in the roadway.”
A narrow opening.
“We managed to squeeze through a crack in the rock wall.”