Topic: CONSTRUCTION
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foun‧da‧tion W2

1 the solid layer of cement, bricks, stones etc that is put under a building to support it :
building
[countable]TBC2 a basic idea, principle, situation etc that something develops from
basic idea
[countable]3 an organization that gives or collects money to be used for special purposes, especially for charity or for medical research :
the British Heart Foundation
organization
[countable]SSO
the British Heart Foundation4 the establishment of an organization, business, school etc [= founding]:
The school has served the community since its foundation in 1835.
establishment
[uncountable]
The school has served the community since its foundation in 1835.5 if a statement, idea etc is without foundation, there is no proof that it is true [= be groundless]:
Davis dismissed the allegations as being without foundation.
be without foundation
also have no foundation formal
Davis dismissed the allegations as being without foundation.6 to provide the conditions that will make it possible for something to be successful :
Careful planning laid the foundations for the nation's economic miracle.
lay/provide the foundation(s) for something
Careful planning laid the foundations for the nation's economic miracle.7 a cream in the same colour as your skin that you put on before the rest of your make-up
skin
[uncountable]DCB8 to completely change the way something is done or the way people think by having a completely new idea :
Darwin's theory rocked the scientific establishment to its foundations.
shake/rock the foundations of something
also shake/rock something to its foundations
Darwin's theory rocked the scientific establishment to its foundations.