Also found in: Medical, Encyclopedia, Wikipedia.
Related to pedomorphosis: paedomorphosis, pedomorphic


n. pl. pe·do·mor·pho·ses (-sēz′)
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
The simple anatomy of many interstitial species, hypothesized to be the result of regressive evolution, or pedomorphosis, make these opisthobranchs especially difficult to classify and therefore similar in many respects to other interstitial and meiobenthic animals with equally elusive origins (Swedmark, 1968).
There is no reason to assume that pedomorphosis led to the occurrence of the seventh segment in adult leptostracans and to the loss of the highly complex eumalacostracan tail-fan (Hessler, 1983; Paul et al., 1985) in this group.