# Maunder Minimum

> English word · Proper noun

## Definitions
1. The period between 1645 and 1715 marked by records and other indications of very low levels of sunspot activity of the Sun, corresponding to a period of global cooling.

## Etymology
First noted by Gustav Spörer in publications in 1887 and 1889, work that was relayed to the Royal Astronomical Society in London, and then expanded on, by the solar astronomers Edward Walter Maunder (1851–1928) and (his wife) Annie S. D. Maunder (1868–1947).

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