Standard Lemma guide

optoisolator

noun · 1 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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  • General-American: /ˌɑptoʊˈaɪsəleɪtɚ/
  • Received-Pronunciation: /ˌɒptəʊˈaɪsəleɪtə/

1

noun

Meaning 1

A device that transmits a signal optically between two isolated electronic circuits

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Etymology tree Proto-Indo-European *h3ekw-der. Ancient Greek ὄπωπᾰ (ópōpă) Proto-Indo-European *-tós Proto-Hellenic *-tós Ancient Greek -τός (-tós) Ancient Greek ὀπτός (optós)der. English opto- English isolate English -or English isolator English optoisolator From opto- + isolator.

Across languages

Translations

2 source translations are retained for this English entry.

  • German: Optokoppler — device that transmits a signal optically
  • Italian: optoisolatore — device that transmits a signal optically