IPA: /səˈprɛsər/
KK: /səˈprɛsər/
A device or entity that reduces or controls something, such as unwanted electrical currents or the expression of certain genes.
The engineer installed a suppressor to minimize electrical noise in the circuit.
Suppressor → It is formed from "suppress" (from Latin "suppressus", meaning to press down) and "-or" (meaning one who). The word "suppressor" refers to one who presses down or restrains something.
Think of someone who 'presses down' ('suppress') on something — that's why a suppressor is someone who restrains or limits.