Student Dictionary

5 entries found for beam.
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Main Entry: 1beam
Pronunciation: primarystressbemacronm
Function: noun
1 : a long heavy piece of timber or metal used especially as a main horizontal support of a building or ship
2 : the bar of a balance from which scales hang
3 : the width of a ship at its widest part
4 a : a ray of light b : a collection of nearly parallel rays (as X-rays) or a stream of particles (as electrons)
5 : a constant radio signal sent out to guide pilots along a course

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