1. Plural of duopolist; companies or firms that are the only two major sellers in a market or industry.
Usage: economics; business

Examples

• The two duopolists control over 80% of the smartphone market.
• Regulators are investigating whether the duopolists are engaging in anti-competitive practices.
• These duopolists have dominated the industry for decades.
• The duopolists agreed to lower prices in response to consumer complaints.
• New competitors are challenging the duopolists' market dominance.