Pronunciation: ( ˌ )k ō -h ō - ' mä-l ə -j ē
Function: noun
Date: circa 1959
: a part of the theory of topology in which groups are used to study the properties of topological spaces and which is related in a complementary way to homology theory ― called also cohomology theory
– co · ho · mo · log · i · cal \ - ˌ h ō -m ə - ' lä-ji-k ə l, - ˌ hä- \ adjective