Standard Lemma guide

insulate

adj · verb · 5 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: /ˈɪnsjʊleɪt/
  • UK: /ˈɪnʃʊleɪt/
  • US: /ˈɪnsʊleɪt/
  • US: /ˈɪnsəleɪt/
  • Canada: [ˈɪns(j)ʊle(ɪ)t]
  • US: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: IH1 N S AH0 L EY2 T Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Of pollen or spores, with superficial ornamentation grouped in circular or polygonal areas separated by grooves.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

verb

Meaning 2

To separate, detach, or isolate.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

verb

Meaning 3

To separate a body or material from others, e.g. by non-conductors to prevent the transfer of electricity, heat, etc.

Definition source: English Wiktionary via Wiktextract

Examples

  • Ceramic can be used to insulate power lines.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

verb

Meaning 4

place or set apart

Definition source: Princeton WordNet 3.0

Examples

  • They isolated the political prisoners from the other inmates

Meaning relationships

Synonyms: isolate

Antonyms: none provided

Broader terms: discriminate, separate, single out

Narrower terms: segregate, ghettoize, ghettoise, cloister, seclude, sequester, sequestrate, withdraw, quarantine, maroon

5

verb

Meaning 5

protect from heat, cold, or noise by surrounding with insulating material

Definition source: Princeton WordNet 3.0

Examples

  • We had his bedroom insulated before winter came

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: change, alter, modify

Narrower terms: weatherstrip, soundproof

History

Etymology

From Latin īnsula (“isle, island”) + -ate (verb-forming suffix) or from Late Latin īnsulātus (“made an island”), see etymology at -ate. First attested in the 16th century; the general verb īnsulō (“insulate”) is attested only in New Latin and postdates the English term, but influence from an otherwise unattested Medieval Latin counterpart cannot be ruled out. Piecewise doublet of isolate.

Across languages

Translations

35 source translations are retained for this English entry.

  • Bulgarian: отделям (otdeljam) — to separate or detach
  • Bulgarian: изолирам (izoliram) — to separate or detach
  • Catalan: aïllar — to separate or detach
  • Catalan: isolar — to separate or detach
  • Esperanto: izoli — to separate or detach
  • Finnish: eristää — to separate or detach
  • French: isoler — to separate or detach
  • German: isolieren — to separate or detach
  • Ido: izolar — to separate or detach
  • Japanese: 切り離す (kirihanasu) — to separate or detach
  • Japanese: 隔絶する (kakuzetsu suru) — to separate or detach
  • Japanese: 孤立させる (koritsu saseru) — to separate or detach
  • Māori: ārai — to separate or detach
  • Polish: izolować — to separate or detach
  • Portuguese: isolar — to separate or detach
  • Romanian: izola — to separate or detach
  • Spanish: aislar — to separate or detach
  • Swedish: isolera — to separate or detach
  • Bulgarian: изолирам (izoliram) — to separate in order to prevent a transfer
  • Catalan: aïllar — to separate in order to prevent a transfer
  • Catalan: isolar — to separate in order to prevent a transfer
  • Dutch: isoleren — to separate in order to prevent a transfer
  • Finnish: eristää — to separate in order to prevent a transfer
  • French: isoler — to separate in order to prevent a transfer
  • German: isolieren — to separate in order to prevent a transfer
  • Hebrew: בידד — to separate in order to prevent a transfer
  • Hebrew: בִּדֵּד (bidéd) — to separate in order to prevent a transfer
  • Japanese: 絶縁する (zetsuen suru) — to separate in order to prevent a transfer
  • Polish: izolować — to separate in order to prevent a transfer
  • Portuguese: isolar — to separate in order to prevent a transfer
  • Portuguese: insular — to separate in order to prevent a transfer
  • Romanian: izola — to separate in order to prevent a transfer
  • Russian: изоли́ровать (izolírovatʹ) — to separate in order to prevent a transfer
  • Spanish: aislar — to separate in order to prevent a transfer
  • Swedish: isolera — to separate in order to prevent a transfer