Nearby Words

K shell

[key-shel]

K-shell

[key-shel]
noun Physics.
the first shell of electrons surrounding the nucleus of an atom and containing, when filled, two electrons having principal quantum number 1.


Origin:
1965–70
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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K shell is always a great word to know.
So is ninnyhammer. Does it mean:
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
a fool or simpleton; ninny.
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