English Dictionary

Define dictionary terms easily in our powerful online English dictionary.

Searching for...

No matching words found

Try a different search term or browse the dictionary

Definition mega- in British English

mega- prefix

prefix
/meɡə/
1

one million: used with some units of measurement

Example

a 2,000-megawatt power plant

Synonyms and related words
2

very large or important: used with some nouns

Example

Cruise is now a megastar.

Synonyms and related words
Definition mega- in British English