b

B, second letter of the alphabet. Its Greek correspondent is named beta. It is a usual symbol for a voiced bilabial stop. In musical notation it is used to represent a note in the scale. In chemistry B is the symbol of the element boron.

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B

(Byte, bit) See KB, MB, GB and TB.

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b

(agriculture)

barn

(physics)

bel

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B

(physics)

bel

(optics)

brewster

(chemistry)

boron

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beam

1. A structural member whose prime function is to carry transverse loads, as a joist, girder, rafter, or purlin. The term beam may be modified by an adjective indicating its location; as, for example, an end beam or side beam. See anchor beam, binding beam, breastsummer beam, camber beam, ceiling beam, collar beam, cross beam, dragon beam, floor beam, ground beam, hammer beam, I-beam, laced beam, perimeter beam, summerbeam, tie beam, top beam, wind beam

2. A group of nearly parallel rays of light.

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class A, B, C, D, E, F

A classification applied to fire doors, fire windows, roof coverings, interior finishes, places of assembly, etc., to indicate gradations of fire safety. See fire-endurance, fire-door rating.

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1.		B - byte.
2.	(language)	B - A systems language written by Ken Thompson in 1970 mostly for his own use under Unix on the PDP-11. B was later improved by Kerninghan(?) and Ritchie to produce C. B was used as the systems language on Honeywell's GCOS-3. B was, according to Ken, greatly influenced by BCPL, but the name B had nothing to do with BCPL. B was in fact a revision of an earlier language, bon, named after Ken Thompson's wife, Bonnie. ["The Programming Language B", S.C. Johnson & B.W. Kernighan, CS TR 8, Bell Labs (Jan 1973)].
3.		b - bit or maybe byte (B).