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Dictionary

molec'ular beam'

Physics.
a stream of molecules freed from a substance, usually a salt, by evaporation and then passed through a narrow slit for focusing, for investigating the properties of nuclei, atoms, and molecules. Also called molec'ular ray'.

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

molecular astronomy

molecular biology

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