Dictionary.com
definitions

steatopygia

[stee-at-uh-pahy-jee-uh, stee-uh-tuh-]
noun
  1. extreme accumulation of fat on and about the buttocks, especially of women.

Origin of steatopygia

1855–60; steato- + Greek pȳg(ḗ) buttocks + -ia -ia
Related formsste·at·o·pyg·ic [stee-at-uh-pij-ik, stee-uh-tuh‐] /stiˌæt əˈpɪdʒ ɪk, ˌsti ə tə‐/, ste·at·o·py·gous [stee-at-uh-pahy-guh s, stee-uh-top-uh-guh s, stee-uh-tuh-pahy‐] /stiˌæt əˈpaɪ gəs, ˌsti əˈtɒp ə gəs, ˌsti ə təˈpaɪ‐/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for steatopygous

steatopygia

steatopyga (ˌstɪətəʊˈpaɪɡə)

noun
  1. excessive fatness of the buttocks
Derived Formssteatopygic (ˌstɪətəʊˈpɪdʒɪk) or steatopygous (ˌstɪəˈtɒpɪɡəs), adjective

Word Origin for steatopygia

C19: from New Latin, from steato- + Greek pugē the buttocks
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 steatopygous

steatopygia

n.

"abnormal accumulation of fat on the buttocks of certain races," 1822, Modern Latin, from steato- "fat, tallow," from Greek stear (genitive steatos) "solid fat, suet" (see stone (n.)) + Greek pyge "buttocks."

Online Etymology Dictionary, © 2010 Douglas Harper
steatopygous in Medicine

steatopygia

(stē-ăt′ə-pĭj′ē-ə, -pī′jē-ə)
n.
  1. Excessive accumulation of fat on the buttocks.
Related formsste′a•to•pyg′ic (-pĭj′ĭk, -pī′jĭk) null adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.