1. A unit of cultural information, such as a cultural practice or idea, that is transmitted verbally or by repeated action from one mind to another.
a. An image or short video clip, often accompanied by a humorous saying or popular catchphrase, that is transmitted virally, especially on social media.
b. A humorous saying or popular catchphrase that is transmitted virally, especially as a caption for such an image or video clip.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The American Heritage Dictionary Blog
Check out our blog, updated regularly, for new words and revised definitions, interesting images from the 5th edition, discussions of usage, and more.