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 direction of time within a four-dimensional relativistic view of the cosmos.
Definition source: English Wiktionary via Wiktextract
Topics: natural-sciences, physical-sciences, physics
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
The subjective feeling of movement from past to future.
Definition source: English Wiktionary via Wiktextract
Topics: human-sciences, philosophy, sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Entropy.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
Reported coined in 1927.
Across languages
4 source translations are retained for this English entry.
