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
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