cyclophosphamide

/ˌsʌɪ.kləʊˈfɒs.fə.mʌɪd/

//ˌsʌɪ.kləʊˈfɒs.fə.mʌɪd// noun

"cyclophosphamide" is a 16-letter English headword indexed on PlainSpell.

The verdict

“cyclophosphamide” is uncommon English (frequency #86,188 among 5,599 “C” headwords), classed as a noun. The kind of spelling people second-guess.

#86,188
frequency rank, English
5,599
“C” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - An immunosuppressive, antineoplastic drug used in the treatment of Hodgkin's disease and certain other forms of cancer.

Corpus desk

Index EN-cyclophosphamide · cyclophosphamide · English

cyclophosphamide · rank #86,188 · 0 variants · 0 confusables

  • FREQ-RARE #86,188
  • LEN-MEGA 16 letters
  • VOW-6 6 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-DENSE 5,599
  • PHOTO-FINISH crèche

Nearest frequency peer: crèche (-6 rank slots)

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.

Long-tail ranks near “cyclophosphamide”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “cyclophosphamide” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for cyclophosphamide
PropertyValue
Headwordcyclophosphamide
LanguageEnglish
Part of speechNoun
IPA/ˌsʌɪ.kləʊˈfɒs.fə.mʌɪd/
Letters16
Frequency rank#86,188
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “cyclophosphamide” in English

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).cyclophosphamidefalls in this rarity band:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Rare peers in the same band: “crèche” (#86,182), “debasement” (#86,194), “crosscountry” (#86,181). Among 5,599 “C” headwords, “cyclophosphamide” is #86,188. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

cyclophosphamide is uncommon English at frequency #86,188 among 5,599 “C” headwords, classed as anoun, transcribed /ˌsʌɪ.kləʊˈfɒs.fə.mʌɪd/. Rarity is why readers land here mid-draft. Gloss: "An immunosuppressive, antineoplastic drug used in the treatment of Hodgkin's disease and certain other forms of cancer.".

cyclophosphamide doesn't appear in our generated misspelling index, suggesting the orthography follows predictable English patterns. This entry stands alone in our confusable dataset, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From cyclo- + phosphamide. The correct English form is cyclophosphamide, spelled C-Y-C-L-O-P-H-O-S-P-H-A-M-I-D-E.

Definition

  1. 1
    An immunosuppressive, antineoplastic drug used in the treatment of Hodgkin's disease and certain other forms of cancer.

Recorded use

Wiktionary example

These source excerpts show how cyclophosphamide appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. The patient was treated with methylprednisolone, cyclophosphamide, and azathioprine, as well as burn center protocol care with daily tankings.

Etymology

From cyclo- + phosphamide.

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 "cyclophosphamide"?
"cyclophosphamide" is spelled C-Y-C-L-O-P-H-O-S-P-H-A-M-I-D-E. The IPA pronunciation is /ˌsʌɪ.kləʊˈfɒs.fə.mʌɪd/.
What does "cyclophosphamide" mean?
As a noun, "cyclophosphamide" means: An immunosuppressive, antineoplastic drug used in the treatment of Hodgkin's disease and certain other forms of cancer.
How do you pronounce "cyclophosphamide"?
The IPA (International Phonetic Alphabet) transcription for "cyclophosphamide" is /ˌsʌɪ.kləʊˈfɒs.fə.mʌɪd/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "cyclophosphamide"?
From cyclo- + phosphamide. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "cyclophosphamide", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 16 letters (nearest by frequency rank).

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list