Adjective
uricotelic (not comparable)
Relating to, or exhibiting uricotelism
Firstly, all known diapsids are uricotelic, meaning they excrete uric acid as nitrogenous waste, and there is no known case of a diapsid re-evolving ureotelism, or the excretion of urea, even when they return to semi-aquatic lifestyles. Source: Internet
Crocolilians, for example, are still uricotelic, although they are also partly ammonotelic, meaning they excrete some of their waste as ammonia. Source: Internet
Therefore, turtles would have to be the only known case of a uricotelic reptile reverting to ureotelism. Source: Internet