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Meaning of optical double | Babel Free

Noun CEFR B2

Definitions

A star that appears as a double due to an optical illusion; in reality, the stars may be far apart from each other.

Equivalents

Français étoile double optique

日本語見かけの二重星

CEFR level

B2

Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See also

optical drive optical extent optical fibre optical flat optical glass optical illusion