# Rossiter-McLaughlin effect

> English word · Noun

## Definitions
1. A spectroscopic phenomenon observed when an object moves across the face of a rotating star which is seen to undergo a redshift anomaly caused by the obscuration of different parts of its disk.

## Etymology
Named after Richard Alfred Rossiter and Dean Benjamin McLaughlin.

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