seeker

[ see-ker ]

/ ˈsi kər /

a person or thing that seeks.

Rocketry.

a device in a missile that locates a target by sensing some characteristic of the target, as heat emission.
a missile equipped with such a device.

Origin of seeker

Middle English word dating back to 1300–50; see origin at seek, -er¹

Cooper has distanced herself from the widely panned 2007 movie adaptation, The Seeker.

She Who Came After Tolkien, Before Rowling |John Garth |August 31, 2013 |DAILY BEAST
Once there, he did everything he could to disrupt the game while the seeker tried to grab the snitch.

From J.K. Rowling’s Harry Potter Novels to Real Life: The Sport of Quidditch Takes Flight |Jace Lacob |March 14, 2012 |DAILY BEAST
Assange is a maker of mischief and a seeker of publicity, exposing confidential material because he can.

The Espionage Case Against Assange |Stephen L. Carter |December 1, 2010 |DAILY BEAST
To its defenders, WND is a seeker of conservative truth in a liberal mainstream media world.

The GOP's Gay Face-Off |John Avlon |September 18, 2010 |DAILY BEAST

The seeker churches are so seeker-friendly that nobody ever finds anything.

A Prop 8 Crusader Leaves the GOP |Kathleen Parker |March 29, 2009 |DAILY BEAST
Was not the fault in the eyes of the seeker rather than in the faces into which he peered?

Expositor's Bible: The Book of Ecclesiastes |Samuel Cox
Having assumed the form of a pigeon, I come to thee as a seeker of thy protection.

The Mahabharata of Krishna-Dwaipayana Vyasa Bk. 3 Pt. 2 |Translated by Kisari Mohan Ganguli
So in the fashion of those days he became a seeker after truth.

The Soul of a People |H. Fielding
"A seeker of knowledge from the Altai Mountains," I responded.

The Story of an Untold Love |Paul Leicester Ford
Again we can only say that the seeker would be disappointed.

Sex=The Unknown Quantity |Ali Nomad