hinge on/upon something phrasal verb ( see also ↑ hinge )
if a result hinges on something, it depends on it completely:
His political future hinges on the outcome of this election.
The case against him hinged on Lewis’ evidence.
hinge on/upon something phrasal verb ( see also ↑ hinge )
if a result hinges on something, it depends on it completely:
His political future hinges on the outcome of this election.
The case against him hinged on Lewis’ evidence.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012