cellulation
/sɛljʊˈleɪʃn/noun
The process of becoming cellular or of forming cells; division into cells, specifically cellularization; an instance of this.
Origin
Mid 19th century; earliest use found in Garth Wilkinson (1812–1899), Swedenborgian writer and homoeopath. From cellule + -ation, after cellulate. Compare French cellulation.