[ hyoo-muh-fi-key-shuh n, or, often, yoo- ]
/ ˌhyu mə fɪˈkeɪ ʃən, or, often, ˌyu- /
the formation of humus.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for humification
When the pores of the soil had been opened by frost the humification of the fæcal matter went forward as usual.The Dwelling House|George Vivian Poore