VENTURE definition: 1. a new activity, usually in business, that involves risk or uncertainty: 2. to risk going…. Learn more. A venture typically involves starting a new business or investing in an existing one with the aim of making a profit. The term is often used in the context of entrepreneurship, where individuals or groups start a new business venture with the hope of achieving success and financial gain. Ventures can vary in size and scope, ranging from small startups to large corporations. They can also involve different industries, such as technology, finance, or healthcare. Starting a venture requires ... Venture definition: An undertaking that is dangerous, daring, or of uncertain outcome. Venture definition: an undertaking involving uncertainty as to the outcome, especially a risky or dangerous one.. See examples of VENTURE used in a sentence.