different between pedomorphism vs paedomorphic

English

pedo- +? -morphism

pedomorphism (uncountable)

From paedo- +? -morphic.

paedomorphic (comparative more paedomorphic, superlative most paedomorphic)

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.

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