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hinge (up)on (someone or something)

To be dependent or reliant on someone or something. Our vacation plans hinge on how quickly the hurricane gets to the island.
See also: hinge
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

hinge (up)on someone or something

Fig. to depend on someone or something; to depend on what someone or something does. (Upon is formal and less commonly used than cm.) The success of the project hinges upon you and how well you do your job. How well the corn crop does all hinges on the weather.
See also: hinge, on
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

hinge on

Also, hinge upon. Depend or be contingent on, as in This plan hinges on her approval. This expression employs the verb hinge in the sense of "to hang," as a door would hang on a hinge, a usage dating from the early 1700s.
See also: hinge, on
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

hinge on

or hinge upon
To depend on something or someone. Used of facts, events, and situations: The success of this play hinges on three weeks of rehearsal. Whether or not we reach our fundraising goal hinges upon our volunteers.
See also: hinge, on
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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References in periodicals archive ?
The worst plastic hinge damage level due to design earthquake in y-direction is on serviceability limit state, which occurs only on shear wall.
The main subject of this experimental study was the hollow slab hinge joint structure.
For a single-axis flexure hinge, as illustrated in Figure 1, the loading at the end a has six components: two bending moments, [M.sub.y] and [M.sub.z]; two shearing forces, [F.sub.y] and [F.sub.z]; one axial load, [F.sub.]x; and one torsional moment, [M.sub.x].
Salice's Logica, the tool-less fixing system, is now available on Silentia hinges Series 100 with the shallow 12mm (1/2 in.) cup.
Ultra fine adjustment screw equipped in the internal ring pushes the centring flexure hinge, as a result, the target plate moves to the same direction.
The company registered NT$0.11 in per-share net earnings in the fourth quarter of 2011, down 90% from the preceding quarter to hit the lowest quarterly level since becoming public in December 2005, attributing the sharp decline to its one-time disposal of outdated hinges in inventory.
By varying the width of the black lines, or hinges, researchers are able to change how far each hinge folds.
Screw each hinge to the door frame with a single screw and open the hinges.
SCREWS often come loose on hinges when a heavy door has been weighing down on the same hinge and has been repeatedly taken down and put up again over the years.
An active hinge developed by Amcor PET Packaging to help absorb the volume reduction in hot fill bottles has moved up a size.
SELECT Hinges' SL57 hinge is designed for retrofit applications on high-traffic doors.
hinge on the hatch door of a tree house, once cynosure