[seer-uh s]


resembling serum; of a watery nature.
containing or secreting serum.
of, relating to, or characterized by serum.

Origin of serous

1585–95; < Medieval Latin serōsus; see serum, -ous
Related formsse·ros·i·ty [si-ros-i-tee] /sɪˈrɒs ɪ ti/, se·rous·ness, nounnon·se·rous, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for serous

Contemporary Examples of serous

  • But that leak to the Washington Post was a sign, I suppose, that they're going to put some serous political capital into this.

    The Daily Beast logo
    The Gun Debate Heats Up

    Michael Tomasky

    January 8, 2013

Historical Examples of serous

British Dictionary definitions for serous



of, resembling, producing, or containing serum
Derived Formsserosity (sɪˈrɒsɪtɪ) or serousness, noun

Word Origin for serous

C16: from Latin serōsus, from serum
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

Word Origin and History for serous

early 15c., "watery," later "of or pertaining to serum" (16c.), from French séreux (16c.) and directly from Latin serosus, from serum "watery fluid, whey" (see serum). Related: Serosity.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for serous




Containing, secreting, or resembling serum.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.