| packing fraction | |
| —n | |
| a measure of the stability of a nucleus, equal to the difference between its mass in amu and its mass number, divided by the mass number | |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| the offspring of a zebra and a donkey. |
packing fraction (pāk'ĭng) Pronunciation Key
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