inhomogeneity
noun
in·ho·mo·ge·ne·i·ty (ˌ)in-ˌhō-mə-jə-ˈnē-ə-tē 
-ˈnā-
-ˈnā- also nonstandard -ˈnī-;
especially British -ˌhä-mə-
plural inhomogeneities
1
: the condition or an instance of not being homogeneous
2
: a part that is not homogeneous with the larger uniform mass in which it occurs
especially : a localized collection of matter in the universe
inhomogeneous
(ˌ)in-ˌhō-mə-ˈjē-nē-əs
adjective -nyəs
Example Sentences
Recent Examples on the Web At that time, various physicists, including Hawking, were trying to patch up a serious problem (too much inhomogeneity) in Guth’s original inflation theory. 
Alan Lightman, The Atlantic, 8 Feb. 2021
Alan Lightman, The Atlantic, 8 Feb. 2021 Word History
First Known Use
1899, in the meaning defined at sense 1
Medical Definition
inhomogeneity
noun
in·ho·mo·ge·ne·ity
ˌin-ˌhō-mə-jə-ˈnē-ət-ē, -ˈnā-; especially British -ˌhäm-ə-
plural inhomogeneities
: lack of homogeneity