# shale oil

> English word · Noun

## Definitions
1. A synthetic crude oil obtained by the pyrolysis, hydrogenation, or thermal dissolution of oil shale.
2. A crude oil obtained from low permeability petroleum-bearing formations (shales).

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