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Rareoptical double
The correct spelling is optical double.
How to pronounce optical double
noun
Say it like: Opt-ica-l d-owb-le
The correct spelling is optical double. A star that appears as a double due to an optical illusion; in reality, the stars may be far apart from each other.
Usage Examples
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Definition
noun
- 1.A star that appears as a double due to an optical illusion; in reality, the stars may be far apart from each other.
Similar words
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