Standard Lemma guide

simultaneity

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

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.

  • UK: /ˌsɪməltəˈniːɪti/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • US: /ˌsaɪməltəˈniɪti/
  • rhymes with -iːɪti

1

noun

Meaning 1

The quality or state of being simultaneous; simultaneousness.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

More than one complete musical texture occurring at the same time. This first appeared in the music of Charles Ives, and is common in the music of Conlon Nancarrow, and others.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: entertainment, lifestyle, music

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

happening or existing or done at the same time

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: simultaneousness

Antonyms: none provided

Broader terms: timing

Narrower terms: concurrence, coincidence, conjunction, co-occurrence

History

Etymology

From simultane(ous) + -ity. By surface analysis, simult(aneous) + -aneity. Compare French simultanéité.

Across languages

Translations

34 source translations are retained for this English entry.

  • Bulgarian: едновременност (ednovremennost) — the quality or state of being simultaneous
  • Catalan: simultaneïtat — the quality or state of being simultaneous
  • Chinese Mandarin: 同時性 /同时性 (tóngshíxìng) — the quality or state of being simultaneous
  • Danish: samtidighed — the quality or state of being simultaneous
  • Dutch: gelijktijdigheid — the quality or state of being simultaneous
  • Esperanto: samtempeco — the quality or state of being simultaneous
  • Finnish: samanaikaisuus — the quality or state of being simultaneous
  • French: simultanéité — the quality or state of being simultaneous
  • Galician: simultaneidade — the quality or state of being simultaneous
  • Georgian: ერთდროულობა (ertdrouloba) — the quality or state of being simultaneous
  • German: Gleichzeitigkeit — the quality or state of being simultaneous
  • German: Simultanität — the quality or state of being simultaneous
  • Hungarian: egyidejűség — the quality or state of being simultaneous
  • Italian: simultaneità — the quality or state of being simultaneous
  • Manx: coghleashaght — the quality or state of being simultaneous
  • Manx: coghleashaghtys — the quality or state of being simultaneous
  • Polish: jednoczesność — the quality or state of being simultaneous
  • Polish: równoczesność — the quality or state of being simultaneous
  • Portuguese: simultaneidade — the quality or state of being simultaneous
  • Romanian: simultaneitate — the quality or state of being simultaneous
  • Russian: одновре́ме́нность (odnovréménnostʹ) — the quality or state of being simultaneous
  • Serbo-Croatian: си̏мулта̄но̄ст — the quality or state of being simultaneous
  • Serbo-Croatian: исто̀времено̄ст — the quality or state of being simultaneous
  • Serbo-Croatian: исто̀добно̄ст — the quality or state of being simultaneous
  • Serbo-Croatian: sȉmultānōst — the quality or state of being simultaneous
  • Serbo-Croatian: istòvremenōst — the quality or state of being simultaneous
  • Serbo-Croatian: istòdobnōst — the quality or state of being simultaneous
  • Spanish: simultaneidad — the quality or state of being simultaneous
  • Swedish: samtidighet — the quality or state of being simultaneous
  • Tagalog: pagkakasabay-sabay — the quality or state of being simultaneous
  • Ukrainian: одноча́сність (odnočásnistʹ) — the quality or state of being simultaneous
  • Chinese Mandarin: 同時性 /同时性 (tóngshíxìng) — simultaneity in music
  • Finnish: samanaikaisuus — simultaneity in music
  • Finnish: simultaanisuus — simultaneity in music