Noun: dateline 'deyt,lIn
- An imaginary line on the surface of the earth following (approximately) the 180th meridian
"Crossing the International dateline meant losing a day";
- date line, International Date Line
- A line at the beginning of a news article giving the date and place of origin of the news dispatch
"The dateline read 'PARIS, June 15' at the start of the international report"
Derived forms: datelining, datelined, datelines
Type of: date, line, line of longitude, meridian
Part of: communiqué, despatch [Brit], dispatch
Encyclopedia: Dateline