[mat.u.ra.tion] n (1541) 1 a: the process of becoming mature b: the emergence of personal and behavioral characteristics through growth processes c: the final stages of differentiation of cells, tissues, or organs
2. a: the entire process by which diploid gonocytes are transformed into haploid gametes that includes both meiosis and physiological and structural changes b: spermiogenesis -- mat.u.ra.tion.al adj