verb (used with object)
- to rectify alternating signal currents in a radio receiver.
- to demodulate.
Origin of detect
Examples from the Web for undetected
Then, after carefully replacing the knob, it could be left there undetected.
Powerful German units seeking to keep the escape route open were coming up, undetected, behind them.
For example, reusable sponges can be worn comfortably and undetected during sex.
One of the drones, found in South Korea on March 24th, had apparently flown over Seoul undetected.Smoke Rings, Mystery Backpacks and Gun-Toting Robots: The Weird Wartech of the Korean Conflict|Kyle Mizokami|April 3, 2014|DAILY BEAST
I think it's unlikely that we've had an undetected epidemic of seven-footers.
The House-Surgeon, speaking professionally, spoke also hopefully of undetected complications in the background.When Ghost Meets Ghost|William Frend De Morgan
That the light might not be seen, I hung the coverlid of my bed before the window, so that I could work fearless and undetected.The Life and Adventures of Baron Trenck|Baron Trenck
He had moved on undetected, with the rearmost burghers: now he saw his opportunity and seized it.The Long Night|Stanley Weyman
Undetected by a single human witness, without interruption from slumbering master or lazy hind, the total deed was done.Footprints of Former Men in Far Cornwall|Robert S. Hawker
In which case Barney was sure he could dodge across the street, undetected.The Mad King|Edgar Rice Burroughs
Word Origin for detect
early 15c., from Latin detectus, past participle of detegere "uncover, expose," figuratively "discover, reveal, disclose," from de- "un-, off" (see de-) + tegere "to cover" (see stegosaurus). Related: Detected; detecting.