- One that suppresses: a suppressor of free speech. (noun)
- A gene that suppresses the phenotypic expression of another gene, especially of a mutant gene. (noun)
- A device, such as a resistor or grid, that is used in an electrical or electronic system to reduce unwanted currents. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.