metatropic

met·a·trop·ic

(met'ă-trop'ik),
Denoting a reversion to a previous state.
[meta- + G. tropē, a turning]

metatropic

adjective
(1) Dedifferentiated. 
(2) Regressed.
References in periodicals archive ?
She had been born with metatropic dysplasia, an invariably fatal disease, but knowing that this moment was coming did not make it any less painful.
Thus, for example, were a graduate student and dissertator in africology to be interested in the relation between metatropic (requiring dead organic matter for food) factors, iron smelting, and the eventual ruin of ancient Meroe in Sudan, not just for antiquarian reasons but to discern significance that is informative to contemporary humanity regarding their subspecies life, it is the resource force which would engender means whereby that work could be done empirically.
The youngster is the first person in Ireland to suffer metatropic dysplasia - a rare form of dwarfism affecting just 29 people in the world.
Four-year old Jack Zembsch suffers from Metatropic Dysplasia (MD), a rare and dangerous form of dwarfism characterized by soft vertebrae and a badly deformed spine.
org/bbf/ Metatropic Dwarf Registry 3393 Geneva Drive Santa Clara, CA 95051 (408) 244-6354 (408) 296-6317 (fax) ?