(of children) trained to use the toilet(adjective)
WordNet. Princeton University. 2010.
Use "potty-trained" in a sentence
"I have two little girls and I revel in the fact that when Toddler was potty-trained she picked Diego underwear over the princess panties, but that she also likes to wear hair bows."
"He's mostly potty-trained now but Vockler's memories are fresh."
"After frantic calls, the parents found a spot for Zoe in a program that works with children who are being potty-trained."