# metemptosis

> English word · Noun

## Definitions
1. The suppression of a day in the calendar to prevent the date of the new moon being set a day too late, or the suppression of the leap day once in 134 years.

## Etymology
Learned borrowing from Ancient Greek μετέμπτωσις (metémptōsis), from μετεμπίπτω (metempíptō).

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