Meaning of BASIS in English

■ noun ( plural bases -si:z ) the underlying support for an idea, argument, or process.

↘the principles according to which an activity is carried on: she needed coaching on a regular ~.


C16 (denoting a base or pedestal): via L. from Gk, 'stepping'; cf. base 1 .

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.