bio

/ˈbaɪəʊ/

//ˈbaɪəʊ// noun

By · According to Wiktionary data (CC BY-SA) ·

"bio" is a 3-letter English headword indexed on PlainSpell.

The verdict

“bio” is a regularly-used English word, ranked #6,335 in English word frequency and used as a noun.

#6,335
frequency rank, English
3
letters
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Clipping of biography.

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

bio vs by
33% similar
bio vs BS
0% similar
bio vs bo
67% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for bio
PropertyValue
Headwordbio
LanguageEnglish
Part of speechNoun
IPA/ˈbaɪəʊ/
Letters3
Frequency rank#6,335
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Where “bio” sits in English frequency

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

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

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The English entry for bio is 3 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈbaɪəʊ/. Corpus data places it at rank #6,335 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 5 distinct senses for this headword, so context determines which meaning a reader should apply.

We couldn't generate a plausible misspelling set for bio, a sign its spelling follows regular English conventions. It also participates in 20 confusable-pair relationships, "by", "BS", "bo", and more, where similar look or sound leads writers to substitute one word for another in context.

No documented word history exists for this headword, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct English form is bio, spelled B-I-O.

Definition

  1. 1
    Clipping of biography.
  2. 2
    A short section of a user profile that contains information about the user, especially one which can be customised; the about me section.
  3. 3
    A biographical sketch.
  4. 4
    Clipping of biology.
  5. 5
    Clipping of bioscope (“cinema”).

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 "bio"?
"bio" is spelled B-I-O. The IPA pronunciation is /ˈbaɪəʊ/.
What does "bio" mean?
As a noun, "bio" means: Clipping of biography.
What words are commonly confused with "bio"?
"bio" is commonly confused with "by", "BS", "bo". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "bio"?
The IPA (International Phonetic Alphabet) transcription for "bio" is /ˈbaɪəʊ/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "bio" come from?
"bio" is a English word. PlainSpell covers definitions, pronunciations, and spelling data across English, Spanish, Portuguese, French, and German.
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.

Using “bio”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is B-I-O - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈbaɪəʊ/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “by” - see the side-by-side comparison. bio vs by
  • Browse more English words and confusable pairs in the same reference. English words
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.

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

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list