Definition
Duopoly is the market structure dominated by two companies controlling most of the market. Founders reach for it when a vague conversation needs a shared, specific meaning. Name it clearly, then let the next decision — a hire, a price, a test, or a pass — follow from that meaning.
In the room
How the word shows up in a real conversation.
A mentor asks, “What is your Duopoly?” The useful answer is concrete: market structure dominated by two companies controlling most of the market. A slide title is not an answer.
Common mistake
Using Duopoly as a label instead of a fact. If you cannot point to the evidence — a number, a customer, or a written assumption — you are using the word as jargon.
See also
Due on sale clause
Loan provision requiring full repayment when property ownership changes.
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Due process
Legal requirement for fair treatment and proper procedures in decision-making.
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Durable goods
Products with a lifespan of more than three years, such as cars and appliances.
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E-banking
Electronic banking services that allow customers to conduct transactions online.
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