phototherapy
"phototherapy" is a 12-letter English headword indexed on PlainSpell.
The verdict
“phototherapy” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 12
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The use of light to treat disorders of the skin, and certain mood disorders.
Corpus desk
Index EN-phototherapy · phototherapy · English
phototherapy · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-MEGA 12 letters
- VOW-5 5 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "P" thin
- PHOTO-UNK Peer pending
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
| Property | Value |
|---|---|
| Headword | phototherapy |
| Language | English |
| Part of speech | Noun |
| Letters | 12 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “phototherapy” in English
Rare enough to double-check
phototherapy is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "The use of light to treat disorders of the skin, and certain mood disorders.".
No generated misspelling entries exist for phototherapy in our index, since its letter pattern doesn't lend itself to common typo substitutions. Our confusable-pair dataset has no match for it, since its spelling is unusual enough that it doesn't cluster with a lookalike.
Etymologically, the entry records: From photo- + therapy. The correct English form is phototherapy, spelled P-H-O-T-O-T-H-E-R-A-P-Y.
Definition
- 1The use of light to treat disorders of the skin, and certain mood disorders.
Etymology
From photo- + therapy.
Synonyms
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). See the methodology for how each field is sourced and updated.