endotoxin
"endotoxin" is a 9-letter English headword indexed on PlainSpell.
The verdict
“endotoxin” is uncommon English (frequency #95,938 among 2,246 “E” headwords), classed as a noun. The kind of spelling people second-guess.
- #95,938
- frequency rank, English
- 2,246
- “E” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Any toxin secreted by a microorganism and released into the surrounding environment only when it dies.
Corpus desk
Index EN-endotoxin · endotoxin · English
endotoxin · rank #95,938 · 0 variants · 0 confusables
- FREQ-RARE #95,938
- LEN-LONG 9 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 2,246
- PHOTO-FINISH Engstrom
Nearest frequency peer: Engstrom (+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.
Long-tail ranks near “endotoxin”
Sparse band: bars invert rank so rarer forms read shorter
- elephantine
elephantine
4,067 corpus weight
- emasculate
emasculate
4,066 corpus weight
- emasculation
emasculation
4,065 corpus weight
- endotoxin
endotoxin
4,063 corpus weight
- Engstrom
Engstrom
4,062 corpus weight
- EOG
EOG
4,061 corpus weight
What this shows Long-tail view: where “endotoxin” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | endotoxin |
| Language | English |
| Part of speech | Noun |
| Letters | 9 |
| Frequency rank | #95,938 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “endotoxin” in English
Rare enough to double-check
endotoxin is uncommon English at frequency #95,938 among 2,246 “E” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "Any toxin secreted by a microorganism and released into the surrounding environment only when it dies.".
No generated misspelling entries exist for endotoxin in our index, suggesting the orthography follows predictable English patterns. It is not paired with a close-neighbour confusable in our dataset, since no other headword is close enough in sound or shape to pair with it.
Etymologically, the entry records: From endo- + toxin. The correct English form is endotoxin, spelled E-N-D-O-T-O-X-I-N.
Definition
- 1Any toxin secreted by a microorganism and released into the surrounding environment only when it dies.
Recorded use
Wiktionary exampleThese source excerpts show how endotoxin appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
It may resemble the factor 5 in Salmonella, a heat-labile determinant on the endotoxin molecule which, because of its superficial location, blocks the agglutination reaction of the deeper heat-stable O antigens in the same way as do the Vi and K antigens.
Etymology
From endo- + toxin.
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.
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "endotoxin", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 9 letters (nearest by frequency rank).