: a sentence that states the main thought of a paragraph or of a larger unit of discourse and is usually placed at or near the beginning
Example Sentences
Recent Examples on the WebYour daughter should think about defending her thesis with a series of sub-arguments, each expressed as a topic sentence for her body paragraphs. Brian Platzer, The Atlantic, 20 Apr. 2021 While Fowler will occasionally work with small groups of students on discrete skills—like coming up with the topic sentence of a paragraph—students no longer routinely work in reading groups. Natalie Wexler, The Atlantic, 10 Aug. 2020 For emails and other short things, the old college favorite of a topic sentence followed by supporting paragraphs and a conclusion is hard to get wrong. Harry Guinness, New York Times, 7 Apr. 2020 Oracle has a different metaphor: Declarations are like topic sentences while implementing code is akin to the body of paragraphs. Eriq Gardner, The Hollywood Reporter, 19 Feb. 2020
Word History
First Known Use
1885, in the meaning defined above
Kids Definition
topic sentence
noun
: a sentence that states the main thought of a paragraph