# Planck star

> English word · Noun

## Definitions
1. A hypothetical astronomical object whose energy is around the Planck density (5.155 × 10⁹⁶ kg/m³).

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