| Noun | 1. | odontiasis - the eruption through the gums of baby teethgrowing, growth, ontogenesis, ontogeny, maturation, development - (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" precocious dentition - teething at an earlier age than expected |