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Dictionary

L-shell

Pronunciation: (el'shel"), [key]
—n. Physics.
the second shell of electrons surrounding the nucleus of an atom and containing, when filled, eight electrons having principal quantum number 2. Cf. K-shell, M-shell, N-shell.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

LSD

LSI

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