- detection, sensing - the perception that something has occurred or some state exists; "early detection can often lead to a cure"
--1 is a kind of perception
- detection, catching, espial, spying, spotting - the act of detecting something; catching sight of something
--2 is a kind of discovery, find, uncovering
Derived form: verb detect1 - signal detection, detection - the detection that a signal is being received
--3 is a kind of reception
- detection, detecting, detective work, sleuthing - a police investigation to determine the perpetrator; "detection is hard on the feet"
--4 is a kind of police work, police investigation