Definitions for: B

[n] aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations
[n] the 2nd letter of the Roman alphabet
[n] the blood group whose red cells carry the B antigen
[n] (atomic or nuclear physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter
[n] a logarithmic unit of sound intensity equal to 10 decibels
[n] a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder
[n] originally thought to be a single vitamin but now separated into several B vitamins

Webster (1913) Definition: B (b[=e])
is the second letter of the English alphabet. (See Guide to
Pronunciation, [sect][sect] 196, 220.) It is etymologically
related to p, v, f, w and m, letters representing sounds
having a close organic affinity to its own sound; as in Eng.
bursar and purser; Eng. bear and Lat. ferre; Eng. silver and
Ger. silber; Lat. cubitum and It. gomito; Eng. seven,
Anglo-Saxon seofon, Ger. sieben, Lat. septem, Gr."epta`,
Sanskrit saptan. The form of letter B is Roman, from Greek B
(Beta), of Semitic origin. The small b was formed by gradual
change from the capital B.

Note: In Music, B is the nominal of the seventh tone in the
model major scale (the scale of C major ), or of the
second tone in it's relative minor scale (that of A
minor ) . B[flat] stands for B flat, the tone a half
step, or semitone, lower than B. In German, B stands
for our B[flat], while our B natural is called H
(pronounced h["a]).

Synonyms: atomic number 5, B complex, B vitamin, bacilli, bacillus, barn, B-complex vitamin, bel, boron, group B, type B, vitamin B, vitamin B complex

See Also: adermin, alphabetic character, aneurin, antiberiberi factor, antipernicious anemia factor, area unit, biotin, blood group, blood type, borax, chemical element, choline, cobalamin, cyanocobalamin, element, eubacteria, eubacterium, folacin, folate, folic acid, genus Bacillus, hepatoflavin, inositol, kernite, lactoflavin, letter, letter of the alphabet, niacin, nicotinic acid, ovoflavin, pantothen, pantothenic acid, pteroylglutamic acid, pteroylmonoglutamic acid, pyridoxal, pyridoxamine, pyridoxine, riboflavin, Roman alphabet, sound unit, square measure, thiamin, thiamine, true bacteria, vitamin B1, vitamin B12, vitamin B2, vitamin B6, vitamin Bc, vitamin G, vitamin H, vitamin M, water-soluble vitamin

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