In a way that can be detected.

The (relative) effectiveness of a detector

plural of detectivity

Alternative form of detectability

plural of collision detection

The hobby of using a metal detector to hunt for buried coins or archaeological artifacts.

Any agent hired by a private party for the purpose of investigation or evidence gathering.

(computing, chiefly video games) The process or mechanism of determining whether two shapes are partially occupying the same space.

(informal) The use of polygraphs during interrogation in an attempt to verify the truth or falsity of a subject's responses / (broadly) The use of any technique intended to detect deception.

Having failed to be detected; not detected