insulator
/ˈɪn.s(j)ə.leɪ.tə(ɹ)/noun
insulator is spelled I-N-S-U-L-A-T-O-R: 9 letters and 4 syllables. It appears about once in every 2 million words in written English, the 39,832nd most frequent word form (wordfreq, 2021 data). As a noun, insulator means “A substance that does not transmit heat (thermal insulator), sound (acoustic insulator) or electricity (electrical insulator)” (English Wiktionary, September 2026). The plural of insulator is insulators.
How many letters and syllables are in insulator?
| Letters | 9: I-N-S-U-L-A-T-O-R |
|---|---|
| Syllables | 4 (from its American pronunciation) |
| In writing | about once in every 2 million words; the 39,832nd most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is insulator?
Insulator appears about once in every 2 million words in written English, the 39,832nd most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce insulator?
- /ˈɪn.s(j)ə.leɪ.tə(ɹ)/
Insulator has 4 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-insulator.wav, Wikimedia Commons (author and licence on each file's page).
Forms of insulator
- insulators plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does insulator mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A substance that does not transmit heat (thermal insulator), sound (acoustic insulator) or electricity (electrical insulator).
- 2
A non-conductive structure, coating or device that does not transmit sound, heat or electricity (see image)
To isolate electrical wires from the pylons supporting them, one often uses glass insulators.
- 3
A person who installs insulation.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Insulator in Spanish, French, German and Portuguese
In the sense substance:
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does insulator come from?
From insulate + -or.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).