- designating a transformer in which the output voltage is less than the input voltage
- designating a gear that reduces the speed
Used by arrangement with John Wiley & Sons, Inc.
- Decreasing in stages: a step-down gear.
- Electricity Serving to reduce voltage: a step-down transformer.
step-down - Phrases/Idioms
Resign from office, as in He threatened to step down if they continued to argue with him. [Late 1800s]
Reduce, especially in stages, as in They were stepping down the voltage. [c. 1900] Also see step up, def. 1.