Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

WORD ORIGIN

"emit rays of light," early 15c., from beam (n.) in the "ray of light" sense. Sense of "to smile radiantly" is from 1804; that of "to direct radio transmissions" is from 1927. Related: Beamed; beaming.

MORE RELATED WORDS FOR ON THE BEAM

Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.