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• bc
  bc

  abbreviation

  basso continuo.
• BC
  BC

  abbreviation

  buoyancy compensator.
• B/C
  B/C

  bills for collection.
• b.c.
  b.c.

  abbreviation

  before Christ (used in indicating dates).
• B.C.
  B.C.

  abbreviation

  Bachelor of Chemistry.

bc

¹ American  

abbreviation

1. Music. basso continuo.

2. blind copy: used as a notation on the copy of a letter or other document sent to a third person without the addressee's knowledge. Also

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BC ² American  

abbreviation

1. Scuba Diving. buoyancy compensator.

2. British Columbia, Canada (approved for postal use).

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B/C ³ American  

1. bills for collection.

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b.c. ⁴ American  

Or B.C.

abbreviation

1. before Christ (used in indicating dates).

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B.C. ⁵ American  

abbreviation

1. Bachelor of Chemistry.

2. Bachelor of Commerce.

3. bass clarinet.

4. battery commander.

5. British Columbia.

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BC British  

abbreviation

1. Also: B.C..  (indicating years numbered back from the supposed year of the birth of Christ) before Christ Compare AD

   in 54 bc Caesar came

2. British Columbia

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Usage

The abbreviation b.c. “before Christ” is always placed after a date or century: Cleopatra lived from 69 to 30 b.c. The war took place in the first century b.c. See also a.d. ¹

Example Sentences

Taagepera, R. Size and duration of empires growth-decline curves, 3000 to 600 b.c.

From Nature • Nov. 14, 2017

French archaeologists, for example, have found exquisite ceramic figurines, bowls and funerary objects at sites that date from at least 8000 b.c.

From Time Magazine Archive

According to one of them, Aspero went back to 3000 b.c.

From "1491" by Charles C. Mann

The implication is that by 32 b.c. the Olmec already had all three calendars and zero to boot.

From "1491" by Charles C. Mann

La Venta, too, was destroyed, perhaps deliberately, around 350 b.c.

From "1491" by Charles C. Mann