Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

international date line

noun

Definition of international date line

  1. :  an arbitrary line approximately along the 180th meridian designated as the place where each calendar day begins



Circa 1909

First Known Use of international date line

circa 1909


Learn More about international date line


Seen and Heard

What made you want to look up international date line? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to dishevel or rumple

Get Word of the Day daily email!