Definition of “sun” - English Dictionary

“sun” in British English

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sunnoun [ S or U ]

uk /sʌn/ us /sʌn/

A1 the star that provides light and heat for the earth and around which the earth moves:

The sun rises in the east and sets in the west.
The sun's rays are at their most powerful at midday.
We thought we'd go out for a walk while the sun was shining.

A1 the light or heat that the earth receives from the sun:

I think I've had too much sun today - I have a headache.
Let's go and sit out in the sun.

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sunverb

uk /sʌn/ us /sʌn/

written abbreviation for Sunday

(Definition of “sun” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“sun” in American English

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sunnoun [ U ]

us /sʌn/

the star around which the earth moves and that provides light and heat for the earth:

The sun is the center of our solar system.

Sun also means the light or heat that the earth receives from this star:

Sit in the sun where it’s a lot warmer.

sunverb [ I/T ]

us /sʌn/ -nn-

to lie or sit somewhere where there is a lot of sun, esp. in order to make your skin darker:

[ T ] All morning, the cat sunned herself on the stone wall.

abbreviation forSunday

(Definition of “sun” from the Cambridge Academic Content Dictionary © Cambridge University Press)