|Origin:||Greek, 'step, base', from bainein 'to go'|
ba‧sis S3 W1 plural bases [countable]
the facts, ideas, or things from which something can be developed:
Their claim had no basis in fact (=it was not true).
because of a particular fact or situation:
discrimination on the basis of sex
every day, week etc:
I'm saving money on a regular basis.
a system or agreement by which someone or something is voluntary etc:
Nurses are employed on a full-time basis.