D defs.my
Entry 1 sense Webster, 1913

bottom-up

· IPA /bˈɑtəmˌʌp/
01 adj. planning or building the smallest parts first; as, bottom-up programming. Opposite of top-down.
  1. 1.
    planning or building the smallest parts first; as, bottom-up programming. Opposite of top-down.(Computers)