Did you know?

Click any word in a definition or example to find the entry for that word

Imaginary lines around the earth

the Antarctic Circle


an imaginary line around the Earth at the south pole

the Arctic Circle

an imaginary line around the Earth near the north pole

the date line


the international date line

the equator


an imaginary line that goes round the Earth and divides it into the northern and southern hemispheres



near the equator, or typical of conditions near the equator

the international date line


an imaginary line in the Pacific Ocean going from north to south that divides the world into two parts so that the date in the eastern half is one day earlier than the date in the western half. The international date line is often simply called the date line.



the distance of a point on the Earth from the equator (=the imaginary line around the middle of the Earth), measured in degrees north or south



the distance east or west of the Greenwich meridian (=an imaginary line from the top of the Earth to the bottom), measured in degrees and minutes. Latitude is the distance north or south of the equator.



relating to or measured in longitude



one of the imaginary lines that goes around the Earth from the North Pole to the South Pole. These are used for measuring position, time etc.



an imaginary line around the Earth at a fixed distance from the equator



one of the two imaginary lines around the Earth on either side of the equator. The Tropic of Cancer is 23° 26’ north of it and the Tropic of Capricorn is 23° 26’ south of it.

hostile architecture

the design of buildings or public spaces in a way which discourages people from touching, climbing or sitting on them …

BuzzWord Article

Open Dictionary

boots on the ground

a situation in which a country's armed forces are physically present in an area of conflict …

add a word


A must for anyone with an interest in the changing face of language. The Macmillan Dictionary blog explores English as it is spoken around the world today.

global English and language change from our blog