subluminal

Questions

What does subluminal mean?

Slower than light; having a speed less than light.

Where does subluminal come from?

From sub- + luminal.

How to pronounce subluminal

1. Open the pronunciation page — Open the Speakur entry for “subluminal”.
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 “subluminal”.
4. Repeat and practice — Say “subluminal” aloud, matching stress and vowels until it feels natural.