pop-up

• popup

pop-up (not comparable)

1. Coming into view suddenly from a concealed position.
2. Opening out to form a three-dimensional structure when the page of a book is opened.
   • 1985, Margaret Atwood, The Handmaid's Tale:

     ...my mother... did not believe in mystification; I had a pop-up book of sexual organs by the time I was four...

3. Temporary.
   • 2017 May 13, Barney Ronay, “Antonio Conte’s brilliance has turned Chelsea’s pop-up team into champions”, in the Guardian‎:

     But then this is essentially a pop-up team, glued into place brilliantly, with certain parts already chafing and smoking. Chelsea’s two top goalscorers could be off in a month, Diego Costa to cause an international incident in China, Hazard to the usual summer suspects.

pop-up (plural pop-ups)

1. Anything that pops up, particularly
   1. A pop-up advertisement; an advertisement that is triggered to appear on a computer screen when an Internet user accesses a particular web page.
   2. (baseball) A pop-up ball: a ball that has been hit to a considerable height above the infield or the shallow outfield; a pop fly.
   3. A folded paper element which pops up from a book, greeting card, &c.
   4. A business that quickly pops up, such as a temporary restaurant.
      • Lonely Planet San Francisco Travel Guide

        Pop-ups often charge restaurant prices, but without advance menus, quality control, health-inspected facilities or professional service. Bring cash and arrive early: most pop-ups don't accept credit cards, and popular dishes run out fast.

See also Thesaurus:pop-up.

• ground ball
• fly ball
• line drive
• pop-up advertisement