b

Definitions

General English

  • noun the second letter of the alphabet, between A and C
  • noun a large farm building for storing produce or for keeping animals or machinery
  • noun the seventh letter of the alphabet, between F and H

Astronomy

  • (written as B)
    star type whose members have a surface temperature of 10 000 – 30 000°. Examples include the bright stars Rigel and Spica. The hottest of stars apart from the 0 stars, the B type have neutral helium rather than the B stars’ ionised helium in their spectra.

Computing

  • (written as B:)
    used in personal computers to indicate the second disk drive, normally a floppy disk drive
  • symbol
    (written as B)
    the hexadecimal equivalent of the decimal number 11
  • noun a unit of data compression speed equal to one unit element per second

Cricket

  • abbreviation bowled; used in the scorebook, following the name of a batsman and preceding the name of a bowler, to indicate the bowler responsible for or involved in the batsman’s dismissal. On its own b signifies that the batsman has been bowled out or has played on; other types of dismissal are signified by additional information, such as ‘lbw b McGrath’ or ‘c Gilchrist b McGrath’.

Slang

  • noun
    (written as B)
    a friend, peer. The abbreviation of buddy and/or bro(ther) is used as a greeting between males, particularly in black street usage.
  • symbol forG
    (written as B)
  • noun a friend, peer. This all-purpose greeting used among black speakers (usually, but not necessarily, male) is probably an abbreviation of guy, although gangsta has been suggested as an alternative.
  • noun a gram (of some illicit substance). The abbreviation is typically used in referring to cocaine, which is sold in grams.
  • noun a friend, peer. The abbreviation (probably of ‘guy’) is used as a greeting between males, particularly in black street usage.

Sports

  • noun
    (written as B)
    a human blood type of the ABO system, containing the B antigen. Someone with this type of blood can donate to people of the same group or of the AB group, and can receive blood from people with this type or with type O.

Electronics

  • symbol formagnetic flux density
    (written as B)
  • symbol forsusceptance
    (written as B)
  • symbol forbase
    (written as B)
  • symbol forbel
    (written as B)
  • symbol forbarn
  • chemical symbol forboron
    (written as B)
  • symbol forbaud
  • symbol forbar
  • symbol forbattery
    (written as B)
  • A unit of area used in nuclear physics, equal to 10-28 square meters. One barn equals 100 square femtometers.
  • A unit of data-transmission speed, which indicates as the number of signal changes per second during communication. This can be in the form of a voltage or frequency transition. This term is not synonymous with bits per second. For instance, if a 2,400 baud modem encodes 4 bits per signaling event, it can transmit 9,600 bits per second. Its abbreviation is b. Also called baud rate.
  • A dimensionless unit which expresses the ratio of two powers or intensities, such as voltages, currents, or sound intensities. The number of bels represents the logarithm of the ratio of the quantities measured. A bel is equal to approximately 1.1513 nepers. The decibel, which is 0.1 bels, is a much more frequently encountered unit, as the bel is too large for most applications. Its symbol is b, or B.
  • A nonmetallic element whose atomic number is 5. It has various allotropic forms, the most common being as a brown amorphous powder, a black hard solid, or as extremely hard crystals. It has 10 known isotopes, of which 2 are stable. boron has various applications, including its use as a neutron absorber, as a semiconductor dopant, and in various special alloys. Its chemical symbol is B.
  • A quantitative measure of the strength of a magnetic field present within a magnetic medium. It is the number of lines of force per cross-sectional area of a magnetic circuit, and its SI unit is the tesla. Its symbol is B. Also called magnetic induction (1), or magnetic displacement.
  • The imaginary number component of admittance. Expressed in siemens. Its symbol is B.

Agriculture

  • noun a farm building used for storing hay or grain. In the USA, barns are also used for keeping animals.

Aviation

  • symbol the acceleration due to Earth’s gravity

Construction

  • In data transmission, a unit of measure equal to one bit per second.

Food

  • Egg
  • wood apple

General Science

  • noun a unit of area used to measure nuclear cross-sections, equal to 10-28m2.
  • noun a measure of the number of signal changes transmitted per second
  • noun a unit of relative loudness equal to 10 decibels
  • noun the strength of a magnetic field at a given point.
  • symbol 230, equal to 1 073 741 824

Media Studies

  • noun in the United States, Canada, Australia, and New Zealand, a film rating that means that a film or video is suitable for anyone to watch

Medical

  • noun a chemical element which is present in borax, and essential for healthy plant growth

Military

  • noun a large farm building (normally used for storage)
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