1. (noun) the perception that something has occurred or some state exists

• sensing

2. (noun) the act of detecting something; catching sight of something

• catching
• espial
• spotting
• spying

3. (noun) the detection that a signal is being received

• signal detection

4. (noun) a police investigation to determine the perpetrator

• detecting
• detective work
• sleuthing

1. (noun) the perception that something has occurred or some state exists

• perception

2. (noun) the act of detecting something; catching sight of something

• discovery
• find
• uncovering

3. (noun) the detection that a signal is being received

• reception

4. (noun) a police investigation to determine the perpetrator

• police investigation
• police work

1. (noun) the act of detecting something; catching sight of something

• descry
• descry
• descry
• espy
• espy
• espy
• spot
• spot
• spot
• spy
• spy
• spy
• detect
• discover
• find
• notice
• observe

2. (noun) a police investigation to determine the perpetrator

• detect
• discover
• find
• notice
• observe
• sleuth
• snoop
• spy
• stag