seeker
//ˈsiːkər//
Noun
seekerSingular
seekersPlural
1
A person who is searching for or trying to find something, especially something abstract like truth, knowledge, or spiritual enlightenment.
She is a seeker of truth who questions everything.
2
A device or mechanism designed to locate or track something, such as a heat-seeking missile component.
The missile's infrared seeker can detect heat sources from a long distance.