[noun] coming to full development; becoming mature Synonyms: ripening, maturement
[noun] (biology) the process of an individual organism growing organically; a purely biological unfolding of events involved in an organism changing gradually from a simple to a more complex level; "he proposed an indicator of osseous development in children" Synonyms: growth, growing, development, ontogeny, ontogenesis
[noun] (medicine) the formation of morbific matter in an abscess or a vesicle and the discharge of pus Synonyms: festering, suppuration