Definitions for "Fictitious business name"
Names often used in conducting a business, or during a lawsuit when that persons name is not known or when it is appropriate to conceal the true name of the party.
A business name other than that of the person under whom the business is registered. Most state license laws require such brokerage offices operating under an assumed name be jointly registered under the supervising broker's name and the fictitious business name.
A name other the entity's true name, under which an individual or business entity conducts business.  Also referred to as an assumed name, a trade name or "doing business as" (D.B.A.).