The toast is in the toaster - when it pops up it will be ready.
appear suddenly or unexpectedly; "The farm popped into view as we turned the corner"; "He suddenly popped up out of nowhere"
If someone or something pops up, they appear in a place or situation unexpectedly. She was startled when Lisa popped up at the door all smiles see also pop-up = appear
{f} appear unexpectedly, appear surprisingly; show up, arrive in an unexpected manner; happen; emerge
Турецкий язык - Английский Язык
Определение to pop up в Турецкий язык Английский Язык словарь