mycobacterium
"mycobacterium" is a 13-letter English headword indexed on PlainSpell.
The verdict
“mycobacterium” is uncommon English (frequency #53,721 among 4,057 “M” headwords), classed as a noun. The kind of spelling people second-guess.
- #53,721
- frequency rank, English
- 4,057
- “M” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Any of many rod-shaped, aerobic bacteria, of the genus Mycobacterium, that cause diseases such as tuberculosis and leprosy.
Corpus desk
Index EN-mycobacterium · mycobacterium · English
mycobacterium · rank #53,721 · 0 variants · 0 confusables
- FREQ-RARE #53,721
- LEN-MEGA 13 letters
- VOW-6 6 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 4,057
- PHOTO-FINISH mythologies
Nearest frequency peer: mythologies (+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 “mycobacterium”
Sparse band: bars invert rank so rarer forms read shorter
- MPP
MPP
46,284 corpus weight
- Muammar
Muammar
46,283 corpus weight
- mycobacteri…
mycobacterium
46,280 corpus weight
- mythologies
mythologies
46,279 corpus weight
- Nebuchadnez…
Nebuchadnezzar
46,277 corpus weight
- nebulae
nebulae
46,276 corpus weight
What this shows Long-tail view: where “mycobacterium” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | mycobacterium |
| Language | English |
| Part of speech | Noun |
| Letters | 13 |
| Frequency rank | #53,721 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “mycobacterium” in English
Rare enough to double-check
mycobacterium is uncommon English at frequency #53,721 among 4,057 “M” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "Any of many rod-shaped, aerobic bacteria, of the genus Mycobacterium, that cause diseases such as tuberculosis and leprosy.".
No misspelling variants are generated for mycobacterium in our index, suggesting the orthography follows predictable English patterns. This headword has no recorded confusable partner, since nothing in our dataset looks or sounds close enough to cause mix-ups.
Etymologically, the entry records: From myco- + bacterium. The correct English form is mycobacterium, spelled M-Y-C-O-B-A-C-T-E-R-I-U-M.
Definition
- 1Any of many rod-shaped, aerobic bacteria, of the genus Mycobacterium, that cause diseases such as tuberculosis and leprosy.
Etymology
From myco- + bacterium.
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 "mycobacterium", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 13 letters (nearest by frequency rank).