# Baader-Meinhof phenomenon

> English word · Noun

## Definitions
1. A cognitive bias by which a recently learned word, concept, etc. suddenly seems to appear with improbable frequency.

## Etymology
Named in 1994 after the West German Baader-Meinhof Group of the 1970s, when a commentator unexpectedly heard two references to the group within 24 hours. The group is named after two of its leaders, Andreas Baader and Ulrike Meinhof.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/baader-meinhof-phenomenon