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
- 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
- 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.
- The symbol for boron.
- Hexadecimal symbol for 11.
- 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
Usage notes
In Modern English, the letter is sometimes silent, e.g. in , and .
Etymology 2
abbreviation of abbreviation of abbreviation ofB
- the number of balls faced by a batsman
- 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)
- 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 alphabetNoun
- A personality type of someone who is relaxed and easygoing and able to engage in leisure activities without worrying about work.
- An academic grade, better than a C and worse than an A
- 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.
- The seventh note in the C major scale.
Etymology
From French Sign Language sign for the letter B.
Letter
- The letter B
Letter
- B
- B flat
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Letter
- The second letter of the Esperanto alphabet.
Noun
B
- The second letter of the Italian, and of the Latin alphabets