An example of radar is the device highway patrol officers use to detect people who are driving too fast.
A teacher's radar for plagiarism.
- In one's conscious awareness as a possibility or as an existing phenomenon:The governor said that running for president was not even on her radar screen.
- noticed (or unnoticed) by someone
- beyond someone's ability to notice or perceive
- not attracting someone’s attention; not making an impression on someone
Idioms and Phrasal Verbs
Origin of radar
- ra(dio) d(etecting) a(nd) r(anging)
From American Heritage Dictionary of the English Language, 5th Edition