Maturation n. The process of bringing, or of coming, to maturity; hence, specifically, the process of suppurating perfectly; the formation of pus or matter.
... allelomorphic factors are not the only ones which are segregated into different germ-cells, at the maturation of the cell; for the factors which are not alternative are likewise distributed, more or less independently of each other, so that it is largely a matter of chance whether factors which enter a cross in the same germ-cell, segregate into ... — Applied Eugenics • Paul Popenoe and Roswell Hill Johnson