audit

Concise Oxford English Dictionary © 2008 Oxford University Press:
audit/ˈɔːdɪt/

▶noun an official inspection of an organization's accounts, typically by an independent body. ▶verb (audits, auditing, audited)

• 1 conduct an audit of.

• 2 N. Amer. attend (a class) informally, without working for credit.

– derivatives
auditability noun,
auditable adjective.

– origin ME: from L. auditus ‘hearing’, from audire ‘hear’, in med. L. auditus (compoti) ‘audit (of an account)’, an audit orig. being presented orally.