step-down

See also: stepdown and step down

English

Etymology

Deverbal from step down.

Adjective

step-down (not comparable)

  1. That decreases in stages.
  2. (of a transformer etc.) That reduces a voltage.
    • 1958 September, “Swindon's First Main-Line Diesel Locomotive”, in Railway Magazine, page 604:
      The internal lighting of the new locomotives can be supplied either from the battery or the dynostarter, and may also be connected to an external supply of 200-250 volts a.c. through a changeover switch and a step-down transformer.

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