(engineering) A beam with cross-section shaped like a capital letter I (with serifs top and bottom), used in construction.

Third-person singular simple present indicative form of beam up

present participle of beam up

plural of tractor beam

plural of Airy beam

(physics) A non-diffracting waveform that gives the appearance of curving as it travels.

plural of high-beam

plural of straining beam

A tree (Sorbus aria, formerly Pyrus aria) related to the apple.

A scaffolding beam, resembling a ladder, composed of a pair of tubular members connected by struts