# plenism

> English word · Noun

## Definitions
1. The belief that all space is full of matter; horror vacui

## Etymology
Latin plenus (“full”) + -ism.

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