detect
detect (dĭ-tĕktʹ) verb, transitive
detected, detecting, detects
1. To discover or ascertain the existence, presence, or fact of.
2. To discern the true nature or character of: detected malice behind the smile.
3. Electronics. To demodulate.
[Middle English detecten, from Latin dētegere, dētect-, to uncover : dē-, de- + tegere, to cover.]
detectʹable or detectʹible adjective
detectʹer noun