therm
/θɝm/noun, verb
therm is spelled T-H-E-R-M: 5 letters and one syllable. It appears about once in every 10 million words in written English, the 94,827th most frequent word form (wordfreq, 2021 data). As a noun, therm means “A unit of heat equal to 100,000 British thermal units, often used in the context of natural gas” (English Wiktionary, September 2026). The plural of therm is therms.
How many letters and syllables are in therm?
| Letters | 5: T-H-E-R-M |
|---|---|
| Syllables | 1 (from its American pronunciation) |
| In writing | about once in every 10 million words; the 94,827th most frequent word form |
| Wrong spellings searched | none measured in search |
| Rhymes with |
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); rhymes and same-letter words are computed by PlainSpell from its own word list.
How common is therm?
Therm appears about once in every 10 million words in written English, the 94,827th 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 therm?
- UK /θɜːm/
- US /θɝm/
Therm has one syllable (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).
What rhymes with therm?
The 12 most written words on PlainSpell end in the same sounds as therm from its last stressed vowel (/ɜɹm/):
Computed by PlainSpell from the pronunciations in the English Wiktionary (dump of September 2, 2026): a rhyme shares every sound from the last stressed vowel to the end; ordered by written frequency (wordfreq 3.1).
Forms of therm
- therms plural, present, singular, he/she/it
- therming participle, present
- thermed participle, past
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does therm mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A unit of heat equal to 100,000 British thermal units, often used in the context of natural gas.
verb
- 1
A technique used by woodturners to simultaneously create multiple copies of spindles and table legs.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Where does therm come from?
1920s, from Ancient Greek θερμός (thermós, “heat”). See also thermo-, -thermic, etc.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).