AD

AD ► ABBREVIATION ▪ Anno Domini (used to indicate that a date comes the specified number of years after the traditional date of Christ's birth).

USAGE _AD is normally written in small capitals and should be placed before the numerals, as in _AD 375 . However, when the date is spelled out, it is normal to write the third century _AD .

ORIGIN Latin, 'in the year of the Lord' .