mainstream

American  

[meyn-streem] / ˈmeɪnˌstrim /

noun

1. the principal or dominant course, tendency, or trend.

   the mainstream of American culture.

2. a river having tributaries.

3. regular school classes or regular schools.

   keeping autistic students in the mainstream.

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adjective

1. belonging to or characteristic of a principal, dominant, or widely accepted group, movement, style, etc..

   mainstream Republicans;

   a mainstream artist;

   mainstream media.

2. of, relating to, or characteristic of jazz falling historically between Dixieland and modern jazz; specifically, swing music.

verb (used with object)

1. to send into the mainstream; cause to join the main force, group, etc..

   to mainstream young people into the labor force.

2. to place (students with disabilities) in regular school classes.

verb (used without object)

1. to join or be placed in the mainstream.

mainstream British  

/ ˈmeɪnˌstriːm /

noun

1. 1. the main current (of a river, cultural trend, etc)

      in the mainstream of modern literature

   2. ( as modifier )

      mainstream politics

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adjective

1. of or relating to the style of jazz that lies between the traditional and the modern

mainstream Cultural  

1. The prevailing current or direction of a movement or influence: “The candidate's speech represented the mainstream thinking on economic policy.”

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Etymology

Origin of mainstream

First recorded in 1660–70; main ¹ + stream

Explanation

Mainstream describes what's viewed by most people in a society as "normal," like the mainstream view that everyone should get married, move to the suburbs, and have children as soon as they can. Something that's mainstream is conventional, or the usual way of doing things. If you're talking about the mainstream in fashion, you mean the ordinary clothes that most people wear and which is found in all the malls — nothing too weird or outlandish. In the 1600s, mainstream described the prevailing current of a river, with the first recorded use of its meaning of prevailing taste or opinion in 1831.

Example Sentences

In deference to his many critics, the BBC added a rider to the title - implying that this was not scientific mainstream thinking but, instead, "a personal view".

From BBC • Apr. 20, 2026

The popularity of injectable GLP-1 drugs like Wegovy and Zepbound has made injecting drugs more mainstream and accepted, say doctors, contributing to the popularity of peptides.

From The Wall Street Journal • Apr. 20, 2026

Therein lies the multitude of problems with using generative AI for mainstream theatrical filmmaking, and Soderbergh’s myopic reasoning for implementing it.

From Salon • Apr. 17, 2026

Alphabet Inc.’s Google and Apple Inc. are adding music-focused generative artificial intelligence features to their core consumer apps, underscoring how advanced AI tools are moving into mainstream use.

From Los Angeles Times • Apr. 16, 2026

I opted to put us both on the road almost immediately after we got there, to save both of us the pointless aggravation and strain to try and fit into a foreign mainstream group.

From "Geeks: How Two Lost Boys Rode the Internet Out of Idaho" by Jon Katz