Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun etd
1 sense of etd
Sense 1
explosive trace detection, ETD -- (a system for screening luggage in airports; an agent passes a swab around or inside luggage and then runs the swab through a machine that can detect trace amounts of explosives)
=> system -- (instrumentality that combines interrelated interacting artifacts designed to work as a coherent entity; "he bought a new stereo system"; "the system consists of a motor and a small computer")