Phrase guide

light cone

noun · 3 senses · updated from the 2026-07-25 local source snapshot

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

Pronunciation

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1

noun

Meaning 1

In special relativity, the pattern describing the temporal evolution of a flash of light in Minkowski spacetime. This is modeled in 3-space using the two horizontal axes as spatial dimensions, while the vertical axis is time.

Definition source: English Wiktionary via Wiktextract

Qualifier: relativity

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A (realized or imagined) data visualization of possible sets of future outcomes that is analogous to such a cone.

Definition source: English Wiktionary via Wiktextract

Usage: broadly, figuratively

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

Used other than figuratively or idiomatically: see light, cone.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

No etymology was provided for this word.

Across languages

Translations

5 source translations are retained for this English entry.

  • German: Lichtkegel — Translations
  • Irish: cón solais — Translations
  • Polish: stożek świetlny — Translations
  • Portuguese: cone de luz — Translations
  • Romanian: con de lumină — Translations