basis
//ˈbeɪsɪs//
Noun
basisSingular
basesPlural
1
The underlying support or foundation for an idea, argument, or process; the fundamental principle or theory.
The theory provides the basis for our research.
2
The system or principle according to which an activity or process is carried on.
Employees are paid on an hourly basis.
3
The starting point or main ingredient for something; a base from which other things develop.
Tomatoes form the basis of many Italian sauces.