mat·u·ra·tion 
(măch′ə-rāshən)
(măch′ə-rāshən)n.
1. The process of becoming mature.
2. Biology
a. The processes by which gametes are formed, including the reduction of chromosomes in a germ cell from the diploid number to the haploid number by meiosis.
b. The final differentiation processes in biological systems, such as the final ripening of a seed or the attainment of full functional capacity by a cell, a tissue, or an organ.
mat′u·ration·al adj.
matu·ra′tive adj.