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[see-buh m] /ˈsi bəm/
noun, Physiology.
the fatty secretion of the sebaceous glands.
Origin of sebum
First recorded in 1700-10, sebum is from the Latin word sēbum tallow, grease Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for sebum


the oily secretion of the sebaceous glands that acts as a lubricant for the hair and skin and provides some protection against bacteria
Word Origin
C19: from New Latin, from Latin: tallow
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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Word Origin and History for sebum

secretion of the sebaceous glands, 1728, from medical use of Latin sebum "sebum, suet, grease," probably related to sapo "soap" (see soap (n.)).

Online Etymology Dictionary, © 2010 Douglas Harper
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sebum in Medicine

sebum se·bum (sē'bəm)
The semifluid secretion of the sebaceous glands, consisting chiefly of fat, keratin, and cellular material.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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sebum in Science
The fatty substance secreted by the sebaceous glands of mammals that protects and lubricates the skin and hair.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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