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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

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Example Sentences

See Examples For:

DBA dBa D.B.A.

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 group moved from Los Feliz to the larger DBA nightclub in West Hollywood, where Demi Moore’s daughter, Rumer Willis, joined the cast.

From Los Angeles Times ● Mar. 4, 2025

But because the law said nothing about other possible legal arrangement, Steadman and others hammered out a bold new creation: the DBA.

From Slate ● Jun. 27, 2023

Migwan drew the construction lines as indicated in the book and labored valiantly to understand why the Angle A was equal to its alternate, DBA, her brow puckered into a studious frown.

From The Camp Fire Girls at School Or, The Wohelo Weavers by Hildegard G. (Hildegard Gertrude) Frey

A scream, said county officials, is considered operational noise, and decibel levels should hover somewhere around 50 dBa during peak hours.

From Los Angeles Times ● Jul. 24, 2026

The com pany has since been merged into D.B.A.

From Time Magazine Archive

But you can go into the County Court and register a business name under your own, what they call a D.B.A. name—doing business as—name.

From Lease to Doomsday by Virgil Finlay

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