electronic countermeasure
Military
noun
A tactical measure involving the use of electronic equipment to disrupt or impair enemy communications, radar, missile guidance systems, or other electronic hardware; usually in plural (abbreviated ECM).
Origin
1940s; earliest use found in The New York Times Book Review.
- on the money
- on the move
- on the nail
- on the nod
- on the nose
- on the (off) chance
- on the one (or the other) hand
- on the order of
- on the (or its) way
- on the (or one's) way
- on the (or one's) way out
- on the other hand
- on the outer
- on the outside
- on the outside looking in
- on the part of (or on my, their, etc., part)
- on the phone
- on the pig's back
- on the plus side
- on the port (or starboard) tack
- on the prod
- on the prowl
- on the quiet
- on the rack
- on the rails