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• DBA
  DBA

  abbreviation

  doing business as: DBA often precedes the name under which a business operates that is not the legal name of the business. Individuals who have not incorporated can also use such a name to carry out business activities. Many states and counties require the registration of the name.
• dBa
  dBa

  decibels above reference noise, adjusted.
• D.B.A.
  D.B.A.

  abbreviation

  Doctor of Business Administration.

DBA

¹ American  

Or dba,

abbreviation

1. doing business as: DBA often precedes the name under which a business operates that is not the legal name of the business. Individuals who have not incorporated can also use such a name to carry out business activities. Many states and counties require the registration of the name.

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noun

1.  assumed business name,.   fictitious name.  a name other than a company's legal name that is used to carry out business activities.

   She ran her home business using the DBA “Betty's Bargains.”

dBa ² American  

Or dba

1. decibels above reference noise, adjusted.

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D.B.A. ³ American  

abbreviation

1. Doctor of Business Administration.

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Etymology

Origin of DBA

First recorded in 1920–25

Example Sentences

Newton said DBA has just surpassed a key technical resistance level, after breaking out of a trendline in early February.

From MarketWatch • Mar. 6, 2026

In the handful of meetings I shadow, nearly all of the UTA and DBA employees are women.

From The Wall Street Journal • Mar. 4, 2026

The current DBA is the most flexible and creative attempt yet by a state to recognize and protect various relationships.

From Slate • Jun. 27, 2023

Singer John Boutte’s usual gig at the DBA bar is gone for now — as are the performances he had planned in Denmark, Switzerland and Scotland.

From Seattle Times • Jul. 14, 2020

This knowledge and understanding exceed the expectations of dominant battlefield awareness and DBA becomes a subset of Rapid Dominance.

From Shock and Awe — Achieving Rapid Dominance by Wade, James P.