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kerogen

[ker-uh-juh n, -jen] /ˈkɛr ə dʒən, -ˌdʒɛn/
noun
1.
the bituminous matter in oil shale, from which shale oil is obtained by heating and distillation.
Origin
1905-1910
1905-10; < Greek kēró(s) wax + -gen
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for kerogens

kerogen

/ˈkɛrədʒən/
noun
1.
the solid organic material found in some rocks, such as oil shales, that produces hydrocarbons similar to petroleum when heated
Word Origin
C20: from Greek kēro(s) wax + -gen
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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kerogens in Science
kerogen
  (kěr'ə-jən)   
A fossilized mixture of insoluble organic material that, when heated, breaks down into petroleum and natural gas. Kerogen consists of carbon, hydrogen, oxygen, nitrogen, and sulfur and forms from compacted organic material, including algae, pollen, spores and spore coats, and insects. It is usually found in sedimentary rocks, such as shale.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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