The Collaborative International Dictionary of English v.0.48:
maturement \maturement\ n. The process of maturing; coming to full development; becoming mature; maturation. Syn: maturation, maturing, ripening. [WordNet 1.5]WordNet (r) 3.0 (2006):
maturement n 1: coming to full development; becoming mature [syn: maturation, ripening, maturement]