Open Dictionary
mouse here to listen, click to choose/add more
Location: USA
Source: Learn That Word
Profile URL:

Are you a native English speaker? How do you pronounce this word?

Thank you for contributing!
upload mp3 file or record now it's easy, promised!

{%type%} Definitions

WordNet 3.0Copyright Princeton University


Short "hint"

A fossilized material in shale and other sedimentary rock that yields oil upon heating.

Usage examples (37)
  • Oil shale is a type of rock that has a petroleum precursor called kerogen trapped inside of it.
  • When the oil shale gets to a suitable temperature, the hydrocarbon material - called kerogen - becomes a vapor.
  • This is a sedimentary rock that contains a solid compound called kerogen, which can be refined into a synthetic crude oil.
  • Oil shale is sedimentary rock that contains solid bituminous materials -- called kerogen -- that are released as petroleum-like liquids when the rock is heated. for more
Tutoring comment

Tutoring comment not yet available...

add more
The Open Dictionary of English is a collaborative project, based on Open Source materials, LearnThat resources, and partner APIs.
We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google,,, and YouTube,,,,, as well as the generous Creative Commons community.