Definition/Meaning of dba

• English - Phrase: dba (abbreviation, initialism) Initialism of doing business as : used to indicate the public alias of a business legally constituted under a different name. His company is "Simon Enterprises, Inc. (2007)", dba "Simon's Party Spot".
• English - Noun: dba (plural dbas) An alias of a business entity. His company has done business under a succession of dbas because he can't settle on a good name. A business doing business under such an alias. Many dbas have used that mailbox service.