# Jeffreys prior

> English word · Noun

## Definitions
1. In Bayesian probability, a non-informative (objective) prior distribution for a parameter space; it is proportional to the square root of the determinant of the Fisher information matrix.

## Etymology
Named after Sir Harold Jeffreys.

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