underpinning

US /ˈʌn.dɚˌpɪn.ɪŋ/
UK /ˈʌn.dɚˌpɪn.ɪŋ/
"underpinning" picture
1.

fundamento, base, soporte

a set of ideas, figures, or structures that provides a base or foundation for something

:
The theory's main underpinning is based on extensive research.
El principal fundamento de la teoría se basa en una investigación exhaustiva.
Strong ethical principles form the underpinning of their business.
Fuertes principios éticos forman el fundamento de su negocio.