# periherm

> English word · Noun

## Definitions
1. In an orbit around the planet Mercury, the point that is closest to Mercury.

## Etymology
From peri- + Ἑρμῆς (Hermês, “Mercury”).

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