isomerism
noun
isomerism is spelled I-S-O-M-E-R-I-S-M: 9 letters. It appears about once in every 25 million words in written English, the 152,206th most frequent word form (wordfreq, 2021 data). As a noun, isomerism means “the phenomenon of the existence of isomers - the existence of different substances with the same molecular formulae” (English Wiktionary, September 2026). The plural of isomerism is isomerisms.
How many letters and syllables are in isomerism?
| Letters | 9: I-S-O-M-E-R-I-S-M |
|---|---|
| In writing | about once in every 25 million words; the 152,206th most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is isomerism?
Isomerism appears about once in every 25 million words in written English, the 152,206th 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).
Forms of isomerism
- isomerisms plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does isomerism mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
the phenomenon of the existence of isomers - the existence of different substances with the same molecular formulae
- 2
the interconversion of isomers
- 3
nuclear isomerism, the phenomenon of the existence of nuclear isomers.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Isomerism in Spanish, French, German and Portuguese
In the sense phenomenon of the existence of isomers:
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 isomerism come from?
From isomer + -ism.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).