doxycycline

/ˌdɒk.sɪˈsʌɪ.kliːn/

//ˌdɒk.sɪˈsʌɪ.kliːn// noun

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

"doxycycline" is a 11-letter English headword indexed on PlainSpell.

The verdict

“doxycycline” is uncommon English (frequency #70,614 among 3,470 “D” headwords), classed as a noun. The kind of spelling people second-guess.

#70,614
frequency rank, English
3,470
“D” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A broad-spectrum antibiotic C₂₂H₂₄N₂O₈ of the tetracycline class, which has a long half-life in the body and used orally to treat various bacterial infections.

Corpus desk

Index EN-doxycycline · doxycycline · English

doxycycline · rank #70,614 · 0 variants · 0 confusables

  • FREQ-RARE #70,614
  • LEN-MEGA 11 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 3,470
  • PHOTO-FINISH domus

Nearest frequency peer: domus (-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.

Frequency neighbourhood for “doxycycline”

Lower corpus rank = more everyday usage (inverted bar length for readability)

corpus weight

What this shows Bars show where “doxycycline” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for doxycycline
PropertyValue
Headworddoxycycline
LanguageEnglish
Part of speechNoun
IPA/ˌdɒk.sɪˈsʌɪ.kliːn/
Letters11
Frequency rank#70,614
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “doxycycline” 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).doxycyclinelands here:

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Same rarity band neighbours include “domus” (#70,613), “doyen” (#70,615), “domina” (#70,612). Source: FrequencyWords open word-frequency list.

Rare enough to double-check

doxycycline is uncommon English at frequency #70,614 among 3,470 “D” headwords, classed as anoun, transcribed /ˌdɒk.sɪˈsʌɪ.kliːn/. Rarity is why readers land here mid-draft. Gloss: "A broad-spectrum antibiotic C₂₂H₂₄N₂O₈ of the tetracycline class, which has a long half-life in the body and used orally to treat various bacterial infections.".

doxycycline doesn't appear in our generated misspelling index, a sign its spelling follows regular English conventions. This headword has no recorded confusable partner, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: Blend of d(e)oxy- + oxy(tetra)cycline. The correct English form is doxycycline, spelled D-O-X-Y-C-Y-C-L-I-N-E.

Definition

  1. 1
    A broad-spectrum antibiotic C₂₂H₂₄N₂O₈ of the tetracycline class, which has a long half-life in the body and used orally to treat various bacterial infections.

Recorded use

Wiktionary example

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

  1. When his symptoms didnʼt improve, he was admitted to a local hospital and given doxycycline, a drug for tick-bite infections.

Etymology

Blend of d(e)oxy- + oxy(tetra)cycline.

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 "doxycycline"?
"doxycycline" is spelled D-O-X-Y-C-Y-C-L-I-N-E. The IPA pronunciation is /ˌdɒk.sɪˈsʌɪ.kliːn/.
What does "doxycycline" mean?
As a noun, "doxycycline" means: A broad-spectrum antibiotic C₂₂H₂₄N₂O₈ of the tetracycline class, which has a long half-life in the body and used orally to treat various bacterial infections.
How do you pronounce "doxycycline"?
The IPA (International Phonetic Alphabet) transcription for "doxycycline" is /ˌdɒk.sɪˈsʌɪ.kliːn/. 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 "doxycycline"?
Blend of d(e)oxy- + oxy(tetra)cycline. 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 "doxycycline", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 11 letters (nearest by frequency rank).

editorially#70,628exculpatory#70,646cheesesteak#70,564carabinieri#70,539

What to do next

You've looked up "doxycycline". Here's where to go from here.

  • Usage frequency rank #70,614 among English headwords in this corpus. Corpus statistics
  • Browse more English words in the "D" letter cohort. D–Z browse
  • PlainSpell rotates a curated Word of the Day from the English corpus, a passive way to discover vocabulary. Word of the Day

PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.

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