Of, relating to, or resulting from the retention of juvenile characteristics by an adult. from 19th c.
2011, Steven Pinker, The Better Angels of Our Nature, Penguin 2012, p. 744:Based on pedomorphic changes in the fossils of Paleolithic humans, Wrangham has suggested that a similar process has been taking place in human evolution during the past thirty to fifty thousand years, and may still be taking place.
