The AI-powered English dictionary
countable and uncountable, plural pull-downs
(computing) A dynamic menu; a list of options in a computer application which appears below a heading when it is selected, and remains only as long as the user needs it. examples
(biology) A technique by which a protein is brought down in a test tube by another.
(signal processing) The conversion of video footage to a higher frame rate by duplicating certain frames. quotations examples
When a TV monitor is in shot, and the film is transferred to video through the normal 2:3 pulldown there will be a strobing effect where the film and video frame rates clash.
2013, David Mellor, Sound Person's Guide to Video, page 216
(usually uncountable) Dodder (plant of genus Cuscuta). examples
(juggling) A trick done with rings where each ring is pulled down over the head instead of being caught and held in the hand. quotations examples
Another classic trick with rings is the 'pull-down'. This can only be done with rings that fit easily over your head.
1994, Haggis McLeod, KNOW THE GAME - JUGGLING
For example, the 11 ring pulldown didn't stick in my head because I don't really juggle rings, and I have no conception of how hard it is.
2004, Luke Holman, Hardest, most tech trick on the net, May 12 2004 via Google Groups
(exercise) An exercise mostly performed by pulling cables, a bar, or handles from a machine situated diagonally to the front top of the sportsman and targetting the rear muscles. examples
not comparable
That can be pulled down (lowered). quotations examples
The new seating in the second-class open coach; note the newspaper racks and the pull-down tables on the seat-backs.
1964 July, Brian Haresnape, “XP64: New Standard Carriage Project”, in Modern Railways, page 4, photo caption