early 15c., "official examination of accounts," from Latin auditus "a hearing, a listening," past participle of audire "to hear" (from PIE root *au- "to perceive"). Official examination of accounts originally was an oral procedure. Also formerly used in a sense "official audience, judicial hearing or examination" (1590s).
audit (v.)
mid-15c., "examine and verify (accounts)," from audit (n.). Meaning "attend (a course, etc.) without intending to earn credit by doing course-work" is from 1933. Related: Audited; auditing.
audit accounts and tax returns
an email log audit
an energy efficiency audit
he made an audit of all the plants on his property
audio
audiology
audiophile
audiotape
audiovisual
audit
audition
auditor
auditorium
auditory
Audrey