pushdown

A pushdown automaton.

Adjective computing, engineering

  1. Describing a stack in which items are removed in a LIFO manner from the end at which they were added.

Origin

From push + down; by analogy with a spring-loaded stack of plates in a cafeteria.

Adjective not comparable

  1. Used by being pushed down.
    • [T]he unfortunate few who suffer from it [ejaculatory anhedonia] are incapable of deriving any pleasure whatsoever from orgasms. They make a bit of mess while staring impassively into the middle distance, and that's it....
    • The containers we always use for those are the OXO ones that have the pushdown button, so I think it probably does stay fresher than flour in a paper bag, and in that way, it works. - 2018 March 19, Maxine Builder, “How...
    • This 30ml serum bottle has a pushdown release nozzle applicator. - 2021 April 21, Helen Wilson-Beevers, “Peace Out: We tried the US skincare brand that’s TikTok-famous for its pore strips”, in The Independent, London:...

Origin

Deverbal from push down.

Related

pushdown accounting

Noun Entry 3

  1. A pushdown automaton.
    • Since indexed grammars are context-free grammars with pushdowns, the generalization of Thatcher's result shows that they generate the yields of the tree languages recognized by deterministic pushdown tree automata. -...
  2. The relegation of the transformation or processing of data to the originating datasource.
    • filter pushdown
    • predicate pushdown

Forms

pushdowns

Noun bodybuilding, hobbies

  1. An exercise that requires one to push weight downward.
    • Machine exercises with weight stacks, like pushdowns or pulldowns, are ideal for cranking out more than three drops because all you need to do is insert the pin in a higher (lighter) slot each time. - (Can we date this...

Forms

pushdowns