Definition & Meaning of "boomer"in English

What is the origin and meaning of the word "boomer"?

The slang term boomer refers to an older person, most often from the Baby Boomer generation born between 1946 and 1964, and is commonly used to imply that someone is out of touch with modern trends, technology, or social attitudes. While it can be a neutral generational label, it became a popular internet term in the late 2010s through the phrase "OK boomer," which younger people used to dismiss outdated opinions. The term is often used in discussions about generational divides, cultural change, and differing perspectives on politics, economics, and lifestyle.