pop up phrasal verb (see also pop)
to appear, sometimes unexpectedly:
Click here, and a list of files will pop up.
Her name keeps popping up in the newspapers. ⇒ pop-up

[TahlilGaran] Dictionary of Contemporary English ▲

I. ˈpop-up¹ adjective

1. pop-up book/card etc a book, card etc with a picture that stands up when you open the pages

2. pop-up menu/window a menu or window that can appear suddenly on a computer screen while you are using it

[TahlilGaran] Dictionary of Contemporary English ▲

II. pop-up² noun [countable]
a window, often containing an advertisement, that suddenly appears on a computer screen, especially when you are looking at a website

[TahlilGaran] Dictionary of Contemporary English ▲

appear to start to be seen, especially suddenly:
A few small white clouds appeared on the horizon.
pop up to appear very suddenly:
A woman’s face popped up from the other side of the fence.
become visible to gradually start to be able to be seen:
The shape of the baby’s head gradually became visible on the screen.
come into view if something comes into view, you start to see it as you move closer to it, or it gets closer to you:
The white cliffs of Dover came into view.
come out if the sun, moon, or the stars come out, they suddenly appear:
The sun came out from behind a cloud.
loom/loom up if a large frightening object or person looms, they appear suddenly:
The dark shape of the castle loomed up out of the mist.
The man’s face suddenly loomed over him.
resurface to appear again after being lost or missing:
The girl’s father has resurfaced after six years of no contact.

[TahlilGaran] English Thesaurus ▲

pop up
to appear suddenly.
After World War II, pizzerias popped up in every city in the nation.

[TahlilGaran] English Idioms Dictionary ▲

pop up
to appear suddenly or unexpectedly
I had not seen my friend for a year but suddenly he popped up for a visit last week.

[TahlilGaran] English Idioms Dictionary ▲