Antitelephone

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
A hypothetical device, used in thought experiments on causality, that could be used to send signals into one's own past.

Synonyms

tachyonic antitelephone

Etymology

From anti- + telephone.

Related phrases

tachyonic antitelephone thought experiment

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.