B
WordNet

noun


(1)   Aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil
(2)   The blood group whose red cells carry the B antigen
(3)   The 2nd letter of the Roman alphabet
(4)   (physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter
(5)   A logarithmic unit of sound intensity equal to 10 decibels
(6)   A trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder
(7)   Originally thought to be a single vitamin but now separated into several B vitamins
WiktionaryText

Letter



  1. The second letter of the basic modern Latin alphabet.

Usage notes

The letter (usually its lower case form ) is used in several romanization systems of non-Latin scripts to represent the bilabial plosive or stop, usually voiced (/b/).
See also

  • For more variations, see Appendix:Variations of "b". , , , , ,

Etymology 2

from abbreviation of The eleventh item from the sequence {1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F}

Symbol



  1. A blood type that has a specific antigen that aggravates the immune response in people with type A antigen in their blood. They can receive blood from type B or type O, but cannot receive blood from AB or A.
  2. The symbol for boron.
  3. Hexadecimal symbol for 11.
  4. IUPAC 1-letter abbreviation for either glutamine or glutamic acid

Etymology 1



letter , from 7th century replacement by Latin of the Anglo-Saxon Futhorc letter .

Letter



  1. The letter , the second letter of the English alphabet.

Usage notes


In Modern English, the letter is sometimes silent, e.g. in , and .

Etymology 2

abbreviation of abbreviation of abbreviation of


B
  1. the number of balls faced by a batsman
  2. The quantity one billion (1,000,000,000), usually used to signify a sum of money
    $2.8 B — “two point eight billion dollars” (i.e., $2,800,000,000)
  3. The grade of pencil that makes darker marks than grade HB but lighter marks than grade 2B; a pencil with soft lead.

Etymology 3

from contrast with the letter ‘A’ and its corresponding personality type from the position of the letter ‘B’ in the English alphabet

Noun



  1. A personality type of someone who is relaxed and easygoing and able to engage in leisure activities without worrying about work.
  2. An academic grade, better than a C and worse than an A
  3. Signifies a second-tier or second class of a given commodity, group, or category, as in B-movie, B-list, etc.
    The television studio revived some of it's B characters for the spinoff.
  4. The seventh note in the C major scale.

Etymology


From French Sign Language sign for the letter B.

Letter



  1. The letter B

Letter



  1. B
  2. B flat


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Letter



  1. The second letter of the Esperanto alphabet.

Noun



B
  1. The second letter of the Italian, and of the Latin alphabets
 
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