fissile etymology

Etymology:

• Latin: "fissilis," meaning "cleavable"
• "Fiss" stem, meaning "to cleave"

Meaning:

Adjective:

• Capable of being split or divided into parts, especially along a natural crack or line of weakness.
• (Specifically in nuclear physics) Capable of undergoing nuclear fission, a process in which a heavy atomic nucleus splits into two smaller nuclei, releasing a great amount of energy.

Origin:

The word "fissile" was first used in the early 19th century to describe rocks that could easily be split into thin sheets or layers. It is derived from the Latin word "fissilis," which means "cleavable."

In the 20th century, the term "fissile" was applied to nuclear materials capable of undergoing nuclear fission. This process was first demonstrated in 1938 by Otto Hahn and Fritz Strassmann, who split the atomic nucleus of uranium.

Fissile materials, such as uranium-235 and plutonium-239, are used as nuclear fuel for nuclear reactors and nuclear weapons.

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