hold the key

hold the key

To contain or provide the missing element or necessary explanation for something. Scientists are scouring the rainforest for medicinal plants in the hope that one of them holds the key to curing cancer. This passage holds the key to understanding the entire novel.
See also: hold, key
References in classic literature ?
Had I even the secret of one such mind, did I hold the key to the fancy of even one lunatic, I might advance my own branch of science to a pitch compared with which Burdon-Sanderson's physiology or Ferrier's brain knowledge would be as nothing.
Sedgefield, County Durham-based, Parsons Containers Group, has obtained a new Darlington site for its U Hold The Key self-storage business.
But I hold the key, and it's me who holds the key to the fight game.
HARRY POTTER AND THE DEATHLY HALLOWS: PART 1 ITV, 7pm The dark lord Voldemort rises to ultimate power over the magical world, so the teenage wizard and his friends set out on a mission to find the magical horcruxes - artefacts containing parts of the evil wizard's soul that hold the key to destroying him.
THESE five women could hold the key to the unsolved murder of music festival victim Robert Hart.
NEW video footage could hold the key to solving the brutal gangland murder of Declan O'Reilly, gardai believe.
Washington, June 29 (ANI): A research team, including an Indian-origin boffin, has revealed that sponges, sea worms and other underwater creatures may hold the key to cure for malaria.
Established in 2001 in Sedgefield, County Durham, U Hold The Key already has more experience than most in providing storage solutions to the business and domestic storage markets.
According to Iongtime science writer Siegfried, game theory may hold the key to unifying the life sciences and physical sciences.
It all goes back to incentives, which, the authors seem to say, hold the key.
TELECOMWORLDWIRE-9 August 2005-BT partners hold the key to convergence success - claim(C)1994-2005 M2 COMMUNICATIONS LTD http://www.
The journeys explore the very seas that hold the key to understanding the health of the world's ocean currents.
Ancient artifacts hold the key to power beyond imagination in this enthralling and adventurous tale.
There is an untapped market we believe we hold the key to.
Just in time for Memorial Day and the official kick-off to summer, Coors Brewing Company (CBC) is launching a new alcohol responsibility initiative designed to remind consumers that they hold the key to preventing drunk driving.