The cornerstoneof something is the basic part of it on which its existence, success, or truth depends.
[formal]
Research is the cornerstone of the profession. [+ of]
More Synonyms of cornerstone
cornerstone in British English
(ˈkɔːnəˌstəʊn)
noun
1.
a stone at the corner of a wall, uniting two intersecting walls; quoin
2.
a stone placed at the corner of a building during a ceremony to mark the start of construction
3.
a person or thing of prime importance; basis
the cornerstone of the whole argument
cornerstone in American English
(ˈkɔrnərˌstoʊn)
noun
1.
a stone that forms part of the corner of a building; esp., a foundation stone of this kind, often inscribed, laid at a ceremony that marks the beginning of building
2.
the basic, essential, or most important part; foundation
Word origin
ME
Examples of 'cornerstone' in a sentence
cornerstone
That's the cornerstone of success.
The Sun (2016)
Political parties formed the cornerstone of representative systems long before universal suffrage.
The Times Literary Supplement (2011)
It has already received binding commitments from five cornerstone investors.
Times, Sunday Times (2013)
Your right to self-determination is the cornerstone of our policy.
Times, Sunday Times (2011)
The rest of the cash will form the cornerstone of the couple's retirement planning.
Times, Sunday Times (2006)
The search for a cornerstone investor comes amid mounting pressure on the company's board.
Times, Sunday Times (2010)
The close-knit nature of the cycling gang is a cornerstone of the success.
Times, Sunday Times (2011)
HEALTHY disagreement is a cornerstone of democratic society, but what happens when the dispute turns ugly?
Times, Sunday Times (2008)
In other languages
cornerstone
British English: cornerstone NOUN
The cornerstone of something is the basic part of it on which its existence, success, or truth depends.
Research is the cornerstone of the profession.
American English: cornerstone
Brazilian Portuguese: base
Chinese: 基石
European Spanish: piedra angular
French: pierre angulaire
German: Grundstein
Italian: pietra angolare
Japanese: 基礎
Korean: 주춧돌
European Portuguese: pedra basilar
Latin American Spanish: piedra angular
1 (noun)
Definition
an indispensable part or basis
Effective opposition is a cornerstone of any democracy.