prednisolone
/pɹɛdˈnɪs.ə.ləʊn/
"prednisolone" is a 12-letter English headword indexed on PlainSpell.
The verdict
“prednisolone” is uncommon English (frequency #81,716 among 46,516 “P” headwords), classed as a noun. The kind of spelling people second-guess.
- #81,716
- frequency rank, English
- 46,516
- “P” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A synthetic glucocorticoid C₂₁H₂₈O₅ that is a dehydrogenated analog of cortisol and is used especially as an anti-inflammatory drug.
| Property | Value |
|---|---|
| Headword | prednisolone |
| Language | English |
| Part of speech | Noun |
| IPA | /pɹɛdˈnɪs.ə.ləʊn/ |
| Letters | 12 |
| Frequency rank | #81,716 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “prednisolone” sits in English frequency
Rare enough to double-check
prednisolone is uncommon English at frequency #81,716 among 46,516 “P” headwords, classed as anoun, transcribed /pɹɛdˈnɪs.ə.ləʊn/. Rarity is why readers land here mid-draft. Gloss: "A synthetic glucocorticoid C₂₁H₂₈O₅ that is a dehydrogenated analog of cortisol and is used especially as an anti-inflammatory drug.".
prednisolone has no tracked misspelling variants, since its letter sequence doesn't invite the usual edit-distance slips. It is not paired with a close-neighbour confusable in our dataset, since its spelling is unusual enough that it doesn't cluster with a lookalike.
Etymologically, the entry records: From prednis(-ol)one. The correct English form is prednisolone, spelled P-R-E-D-N-I-S-O-L-O-N-E.
Definition
- 1A synthetic glucocorticoid C₂₁H₂₈O₅ that is a dehydrogenated analog of cortisol and is used especially as an anti-inflammatory drug.
Etymology
From prednis(-ol)one.
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
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Using “prednisolone”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is P-R-E-D-N-I-S-O-L-O-N-E - every other letter order is a misspelling in standard orthography.
- Say it as /pɹɛdˈnɪs.ə.ləʊn/ (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.