bacteriophage

/bækˈtɪəɹ.ɪəʊˌfeɪd͡ʒ/

//bækˈtɪəɹ.ɪəʊˌfeɪd͡ʒ// noun

"bacteriophage" is a 13-letter English headword indexed on PlainSpell.

The verdict

“bacteriophage” is uncommon English (frequency #76,556 among 4,121 “B” headwords), classed as a noun. The kind of spelling people second-guess.

#76,556
frequency rank, English
4,121
“B” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A virus that specifically infects bacteria.

Corpus desk

Index EN-bacteriophage · bacteriophage · English

bacteriophage · rank #76,556 · 0 variants · 0 confusables

  • FREQ-RARE #76,556
  • LEN-MEGA 13 letters
  • VOW-6 6 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 4,121
  • PHOTO-FINISH backspace

Nearest frequency peer: backspace (-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 “bacteriophage”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “bacteriophage” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for bacteriophage
PropertyValue
Headwordbacteriophage
LanguageEnglish
Part of speechNoun
IPA/bækˈtɪəɹ.ɪəʊˌfeɪd͡ʒ/
Letters13
Frequency rank#76,556
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “bacteriophage” in English

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).bacteriophagefalls in this rarity band:

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

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Rare peers in the same band: “backspace” (#76,555), “Baar” (#76,553), “baile” (#76,559). Among 4,121 “B” headwords, “bacteriophage” is #76,556. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

bacteriophage is uncommon English at frequency #76,556 among 4,121 “B” headwords, classed as anoun, transcribed /bækˈtɪəɹ.ɪəʊˌfeɪd͡ʒ/. Rarity is why readers land here mid-draft. Gloss: "A virus that specifically infects bacteria.".

No generated misspelling entries exist for bacteriophage in our index, typically a sign the spelling maps closely to how the word sounds. 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: Borrowed from French bactériophage, coined by microbiologist Félix d'Hérelle, from bacterio- (“bacteria”) + -phage (“eater”). The correct English form is bacteriophage, spelled B-A-C-T-E-R-I-O-P-H-A-G-E.

Definition

  1. 1
    A virus that specifically infects bacteria.

Recorded use

Wiktionary example

These source excerpts show how bacteriophage appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Another possibility is to enlist a bacteriophage, a kind of virus, to hunt down and kill harmful bacteria for us.

Etymology

Borrowed from French bactériophage, coined by microbiologist Félix d'Hérelle, from bacterio- (“bacteria”) + -phage (“eater”).

Synonyms

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

How do you spell "bacteriophage"?
"bacteriophage" is spelled B-A-C-T-E-R-I-O-P-H-A-G-E. The IPA pronunciation is /bækˈtɪəɹ.ɪəʊˌfeɪd͡ʒ/.
What does "bacteriophage" mean?
As a noun, "bacteriophage" means: A virus that specifically infects bacteria.
How do you pronounce "bacteriophage"?
The IPA (International Phonetic Alphabet) transcription for "bacteriophage" is /bækˈtɪəɹ.ɪəʊˌfeɪd͡ʒ/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "bacteriophage"?
Borrowed from French bactériophage, coined by microbiologist Félix d'Hérelle, from bacterio- (“bacteria”) + -phage (“eater”). See the full etymology section above for more details.
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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "bacteriophage", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 13 letters (nearest by frequency rank).

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

Source: FrequencyWords open word-frequency list