Did you know?

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

Parts of planets and stars

axis

noun

an imaginary line through the middle of an object such as a planet, around which it seems to spin

core

noun

the central part of a planet

corona

noun

the outer atmosphere of the Sun

crater

noun

a large round hole on the surface of a planet caused by a meteorite hitting the surface

magnitude

noun

the brightness of a star, shown as a number

sunspot

noun

a dark area on the surface of the sun

pre-roll

a video advertisement that appears immediately before an online video

BuzzWord Article

Open Dictionary

breakfast rave

a rave … that takes place early in the morning and where there is no alcohol or drugs …

add a word

Blog

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