optical double

Questions

What does optical double mean?

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

How to pronounce optical double

1. Open the pronunciation page — Open the Speakur entry for “optical double”.
2. Read the phonetic spelling — Read the IPA spelling () so you know which sounds to aim for.
3. Play the audio — Click Play to hear reference audio for “optical double”.
4. Repeat and practice — Say “optical double” aloud, matching stress and vowels until it feels natural.