CEFR C1

astronomical unit

noun

Meaning

A unit of measurement equal to the average distance between the Earth and the Sun, approximately 150 million kilometers.

Examples

The average distance from the Sun to the Earth is defined as exactly one astronomical unit.
Scientists often use the astronomical unit to describe distances within our solar system.

Synonyms: AU, Earth-Sun distance

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astronomical unit (C1)

noun

Pronunciation: /ˌæstrəˈnɒmɪkəl ˈjuːnɪt/

Definition

A unit of measurement equal to the average distance between the Earth and the Sun, approximately 150 million kilometers.

Examples

The average distance from the Sun to the Earth is defined as exactly one astronomical unit.
Scientists often use the astronomical unit to describe distances within our solar system.

Synonyms of astronomical unit

Words with a similar meaning to astronomical unit:

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