Phrase guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
No pronunciation record was provided for this word.
noun
The speed of light viewed as an uncrossable barrier to acceleration from subluminal and superluminal speeds in special relativity.
Definition source: English Wiktionary via Wiktextract
Synonyms: light barrier
Antonyms: none provided
Broader terms: barrier, limit, constraint
History
Named after Albert Einstein.
