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Words starting with b

Word Definition
B 1. is the second letter of the English alphabet. (See Guide to Pronunciation, // 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.
2. (n.) aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil
3. (n.) the blood group whose red cells carry the B antigen
4. (n.) the 2nd letter of the Roman alphabet
5. (n.) (physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter
6. (n.) a logarithmic unit of sound intensity equal to 10 decibels
7. (n.) a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder
8. (n.) originally thought to be a single vitamin but now separated into several B vitamins
B battery 1. (n.) battery for supplying a constant positive voltage to the plate of a vacuum tube
B cell 1. (n.) a lymphocyte derived from bone marrow that provides humoral immunity; it recognizes free antigen molecules in solution and matures into plasma cells that secrete immunoglobulin (antibodies) that inactivate the antigens
B complex 1. (n.) originally thought to be a single vitamin but now separated into several B vitamins
B horizon 1. (n.) immediately below the A-horizon; contains deposits of organic matter leached from surface soils
B lymphocyte 1. (n.) a lymphocyte derived from bone marrow that provides humoral immunity; it recognizes free antigen molecules in solution and matures into plasma cells that secrete immunoglobulin (antibodies) that inactivate the antigens
B vitamin 1. (n.) originally thought to be a single vitamin but now separated into several B vitamins
B-52 1. (n.) United States military aircraft; B- stands for bomber
B-complex vitamin 1. (n.) originally thought to be a single vitamin but now separated into several B vitamins
B-flat clarinet 1. (n.) the ordinary clarinet with a middle range
B-girl 1. (n.) a woman employed by a bar to act as a companion to men customers
B-horizon 1. (n.) immediately below the A-horizon; contains deposits of organic matter leached from surface soils
b-meson 1. (n.) exceedingly short-lived meson
B-scan ultrasonography 1. (n.) the use of ultrasonography to view structure in the back of the eye
B. B. King 1. (n.) United States guitar player and singer of the blues (born in 1925)
B. F. Skinner 1. (n.) United States psychologist and a leading proponent of behaviorism (1904-1990)
B.C. 1. (adv.) before the Christian era; used following dates before the supposed year Christ was born
B.C.E. 1. (adv.) of the period before the Common Era; preferred by some writers who are not Christians
B.O. 1. (n.) malodorousness resulting from a failure to bathe
B.T.U. 1. (n.) a unit of energy equal to the work done by a power of 1000 watts operating for one hour
B.Th.U. 1. (n.) a unit of heat equal to the amount of heat required to raise one pound of water one degree Fahrenheit at one atmosphere pressure; equivalent to 251.997 calories
ba 1. (v. i.) To kiss.
2. (n.) a bachelor's degree in arts and sciences
3. (n.) a soft silvery metallic element of the alkali earth group; found in barite
baa 1. (v. i.) To cry baa, or bleat as a sheep.
2. (n.) The cry or bleating of a sheep; a bleat.
3. (n.) the cry made by sheep
4. (v.) cry plaintively
baa-lamb 1. (n.) child's word for a sheep or lamb
Baader Meinhof Gang 1. (n.) a radical left-wing revolutionary terrorist group active in Germany from 1968 until 1977
Baader-Meinhof Gang 1. (n.) a radical left-wing revolutionary terrorist group active in Germany from 1968 until 1977
baaing 1. (n.) The bleating of a sheep.
baal 1. (n.) The supreme male divinity of the Phoenician and Canaanitish nations.
2. (n.) The whole class of divinities to whom the name Baal was applied.
3. (n.) any of numerous local fertility and nature deities worshipped by ancient Semitic peoples; the Hebrews considered Baal a false god
Baal Merodach 1. (n.) the chief Babylonian god; his consort was Sarpanitu
baalim 1. (n. pl.) of Baal