trisomy
/ˈtɹʌɪ.sə(ʊ)mi/
"trisomy" is a 7-letter English headword indexed on PlainSpell.
The verdict
“trisomy” is uncommon English (frequency #79,148 among 27,828 “T” headwords), classed as a noun. The kind of spelling people second-guess.
- #79,148
- frequency rank, English
- 27,828
- “T” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The presence of three copies, instead of the normal two, of a particular chromosome of an organism.
| Property | Value |
|---|---|
| Headword | trisomy |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈtɹʌɪ.sə(ʊ)mi/ |
| Letters | 7 |
| Frequency rank | #79,148 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “trisomy” sits in English frequency
Rare enough to double-check
trisomy is uncommon English at frequency #79,148 among 27,828 “T” headwords, classed as anoun, transcribed /ˈtɹʌɪ.sə(ʊ)mi/. Rarity is why readers land here mid-draft. Gloss: "The presence of three copies, instead of the normal two, of a particular chromosome of an organism.".
No misspelling variants are generated for trisomy in our index, a straightforward case of a spelling with little room for common typos. Our confusable-pair dataset has no match for it, which tends to mean the word is visually distinctive enough to stand on its own.
Etymologically, the entry records: From trisome + -y. The correct English form is trisomy, spelled T-R-I-S-O-M-Y.
Definition
- 1The presence of three copies, instead of the normal two, of a particular chromosome of an organism.
Etymology
From trisome + -y.
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
How do you spell "trisomy"?
What does "trisomy" mean?
How do you pronounce "trisomy"?
What is the origin of the word "trisomy"?
Is PlainSpell free to use?
Using “trisomy”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is T-R-I-S-O-M-Y - every other letter order is a misspelling in standard orthography.
- Say it as /ˈtɹʌɪ.sə(ʊ)mi/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Browse more English words and confusable pairs in the same reference. English words
Other uncommon English words near this rank
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.