bioluminescent
"bioluminescent" is a 14-letter English headword indexed on PlainSpell.
The verdict
“bioluminescent” is uncommon English (frequency #79,308 among 31,241 “B” headwords), classed as an adjective. The kind of spelling people second-guess.
- #79,308
- frequency rank, English
- 31,241
- “B” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Exhibiting bioluminescence.
| Property | Value |
|---|---|
| Headword | bioluminescent |
| Language | English |
| Part of speech | Adjective |
| Letters | 14 |
| Frequency rank | #79,308 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “bioluminescent” sits in English frequency
Rare enough to double-check
bioluminescent is uncommon English at frequency #79,308 among 31,241 “B” headwords, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "Exhibiting bioluminescence.".
No generated misspelling entries exist for bioluminescent in our index, and the word's spelling is regular enough that our generator found nothing worth flagging. No close-neighbour confusable shows up for this headword in our dataset, which typically means the spelling is too distinctive to be mistaken for another word.
Etymologically, the entry records: From bio- + luminescent. The correct English form is bioluminescent, spelled B-I-O-L-U-M-I-N-E-S-C-E-N-T.
Definition
- 1Exhibiting bioluminescence.
Etymology
From bio- + luminescent.
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.
Frequently Asked Questions
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Using “bioluminescent”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is B-I-O-L-U-M-I-N-E-S-C-E-N-T - every other letter order is a misspelling in standard orthography.
- 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.