Decrease
Part of speech: noun
Definition: An amount by which a quantity is decreased.
Part of speech: verb
Definition: Of a quantity, to become smaller. To make (a quantity) smaller.
Example sentence: The development of a strategic plan for cancer prevention in medical schools that is supported by all stakeholders - including the medical community, government, the insurance industry, cancer advocacy groups and all those dedicated to cancer prevention - will be the key to inspiring patients to live lifestyles that will decrease cancer risk.
Step-down
Part of speech: adjective
Definition: That decreases in stagesThat reduces a voltage