rituximab
/ɹɪˈtʌk.sɪˌmæb/
"rituximab" is a 9-letter English headword indexed on PlainSpell.
The verdict
“rituximab” is uncommon English (frequency #95,351 among 3,094 “R” headwords), classed as a noun. The kind of spelling people second-guess.
- #95,351
- frequency rank, English
- 3,094
- “R” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A chimeric monoclonal antibody (trademark Rituxan) administered by intravenous injection especially to treat non-Hodgkin lymphoma and chronic lymphocytic leukemia by binding to the protein CD20 fou...
Corpus desk
Index EN-rituximab · rituximab · English
rituximab · rank #95,351 · 0 variants · 0 confusables
- FREQ-RARE #95,351
- LEN-LONG 9 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 3,094
- PHOTO-FINISH Ripp
Nearest frequency peer: Ripp (-1 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.
Frequency neighbourhood for “rituximab”
Lower corpus rank = more everyday usage (inverted bar length for readability)
- resolver
resolver
4,659 corpus weight
- Riegel
Riegel
4,656 corpus weight
- rikishi
rikishi
4,653 corpus weight
- Ripp
Ripp
4,651 corpus weight
- rituximab
rituximab
4,650 corpus weight
- rosehip
rosehip
4,642 corpus weight
What this shows Bars show where “rituximab” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.
| Property | Value |
|---|---|
| Headword | rituximab |
| Language | English |
| Part of speech | Noun |
| IPA | /ɹɪˈtʌk.sɪˌmæb/ |
| Letters | 9 |
| Frequency rank | #95,351 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “rituximab” sits in English frequency
Rare enough to double-check
rituximab is uncommon English at frequency #95,351 among 3,094 “R” headwords, classed as anoun, transcribed /ɹɪˈtʌk.sɪˌmæb/. Rarity is why readers land here mid-draft. Gloss: "A chimeric monoclonal antibody (trademark Rituxan) administered by intravenous injection especially to treat non-Hodgkin lymphoma and chronic lymphocytic leukemia by binding to the protein CD20 fou...".
Our edit-distance generator produced no likely misspellings for rituximab, since its letter sequence doesn't invite the usual edit-distance slips. This entry stands alone in our confusable dataset, since nothing in our dataset looks or sounds close enough to cause mix-ups.
Etymologically, the entry records: From [Term?] + -tu- (“tumor”) + -ximab (“chimeric monoclonal antibody”). The correct English form is rituximab, spelled R-I-T-U-X-I-M-A-B.
Definition
- 1A chimeric monoclonal antibody (trademark Rituxan) administered by intravenous injection especially to treat non-Hodgkin lymphoma and chronic lymphocytic leukemia by binding to the protein CD20 found on the surface of B cells and causing their lysis.
Etymology
From [Term?] + -tu- (“tumor”) + -ximab (“chimeric monoclonal antibody”).
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.
PlainSpell is rendered directly from structured Wiktionary extracts and open word-frequency lists, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of September 3, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.
Frequently Asked Questions
How do you spell "rituximab"?
What does "rituximab" mean?
How do you pronounce "rituximab"?
What is the origin of the word "rituximab"?
Is PlainSpell free to use?
Similar English words by spelling shape
Same letter count and similar misspelling depth for "rituximab", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 9 letters (nearest by frequency rank).
What to do next
You've looked up "rituximab". Here's where to go from here.
- Usage frequency rank #95,351 among English headwords in this corpus. Corpus statistics
- Browse more English words in the "R" letter cohort. R–Z browse
- PlainSpell rotates a curated Word of the Day from the English corpus, a passive way to discover vocabulary. Word of the Day
PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.
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.