n.
Pronunciation: - ˌ po ̇ r-sh ə - ' n ā -sh ə n
Function: noun
Date: circa 1929
: the transformation of a substance into two or more dissimilar substances usually by simultaneous oxidation and reduction
– dis · pro · por · tion · ate \ - ' po ̇ r-sh ə - ˌ n ā t \ intransitive verb