popup
nounUK /ˈpɒp.ʌp/
US /ˈpɑːp.ʌp/
A popup is a little window that suddenly appears on your screen.
A popup appeared while I was playing my game.
RELATED WORDS
OTHER MEANINGS
2. A book with folded parts that stand up when you open it.
She loves the popup book with the castle that rises from the page.
3. A shop or restaurant that is open for only a short time.
We visited a popup cafe that only stays for one weekend.
4. Something that stands up or appears suddenly.
The popup tent was ready in seconds.