Phrase guide

air gap

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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No pronunciation record was provided for this word.

1

noun

Meaning 1

A network security measure that consists of ensuring that a secure computer network is physically isolated from unsecured networks, such as the public Internet or an unsecured local area network.

Definition source: English Wiktionary via Wiktextract

Qualifier: computer security

Topics: computing, engineering, mathematics, natural-sciences, networking, physical-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: airwall

Antonyms: none provided

2

noun

Meaning 2

A gap where there is a vacuum (not actually air), used to reduce power consumption in microelectronics.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

A type of spark gap using a tube filled with air (which is mostly nitrogen), nitrogen alone, or other gases.

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

4 source translations are retained for this English entry.

  • Chinese Mandarin: 網閘 /网闸 (wǎngzhá) — network security measure
  • Finnish: ilmaväli — network security measure
  • Polish: luka powietrzna — network security measure
  • Russian: возду́шный зазо́р (vozdúšnyj zazór) — network security measure