WordReference Random House Unabridged Dictionary of American English © 2025
spi•ro•no•lac•tone
(spī′rə nō lak′tōn, spī rō′-, -ron′ə-),USA pronunciation n. [Pharm.]
- Drugsa steroid, C24H32O4S, used in combination with other drugs as a diuretic and antihypertensive.
- 1955–60; alteration of spirolactone; see spiro-2, lactone