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Which phrase refers to a concept that exists only in theory?

concept

[kon-sept] / ˈkɒn sɛpt /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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The updated policy does not explicitly cite so-called "model welfare," the idea that AI systems might deserve types of protection usually reserved for living things, but Anthropic and its executives have openly entertained the concept.

From Barron's ● Oct. 8, 2026

The DIY formula relies on taking advantage of the skills each performer has and using them to self-produce material to build a fan base, a concept that comedian Emmy Browning is putting into practice.

From Los Angeles Times ● Oct. 7, 2026

The secretary may have gone to Princeton University, but he hasn’t yet grasped the concept of irony.

From Salon ● Oct. 7, 2026

In an interview with MarketWatch, Feng explained that Graham Capital introduced a profit-taking and stop-loss concept into their decision-making process, rather than slavishly applying what the market suggested.

From MarketWatch ● Oct. 7, 2026

It’s a tough concept to swallow, but it’s true.

From "Zero: The Biography of a Dangerous Idea" by Charles Seife

Leyva, who became chief executive of the convenience-store giant’s North American arm in August, thinks concepts that are popular in Japan can be a hit with shoppers in the U.S. and Canada too.

From The Wall Street Journal ● Oct. 9, 2026

In its eight episodes, “Lanterns” wrestled with an array of concepts some viewers loved and others … well, you know, fanboys and the internet.

From Salon ● Oct. 5, 2026

With further development, the technology could reach timescales relevant to emerging photonic concepts including time crystals and synthetic time-varying optical materials.

From Science Daily ● Sep. 18, 2026

They said first-year students are at times arriving in classrooms lacking basic math and reasoning skills and they have often resorted to teaching remedial middle-school math concepts.

From Los Angeles Times ● Sep. 17, 2026

In the laboratory, I did not truly understand the concepts of night and day.

From "A Rover's Story" by Jasmine Warga




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