apparatus

/ˌæp.əˈɹeɪ.təs/

//ˌæp.əˈɹeɪ.təs// noun

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

"apparatus" is a 9-letter English headword indexed on PlainSpell.

The verdict

“apparatus” is a regularly-used English word, ranked #9,848 in English word frequency and used as a noun.

#9,848
frequency rank, English
9
letters
11
tracked misspellings
1
confusable pair

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The entirety of means whereby a specific production is made existent or task accomplished.

Visual similarity to commonly confused words

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

apparatus vs asparagus
78% similar

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

Key facts for apparatus
PropertyValue
Headwordapparatus
LanguageEnglish
Part of speechNoun
IPA/ˌæp.əˈɹeɪ.təs/
Letters9
Frequency rank#9,848
Misspellings tracked11
Confusable pairs1
SourceWiktionary (kaikki.org)

Where “apparatus” 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). apparatus 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 apparatus is 9 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˌæp.əˈɹeɪ.təs/. Corpus data places it at rank #9,848 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 9 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 11 likely wrong-spelling variants for apparatus, with forms such as "apapratus", "aparatus", and "appaartus". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 1 confusable-pair relationship, "asparagus", where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: Etymology tree Proto-Indo-European *h₂éd Proto-Italic *ad Proto-Italic *ad- Latin ad- Proto-Indo-European *perh₃-der. Latin parō Latin apparō Proto-Indo-European *-tus Proto-Italic *-tus Latin -tus Latin apparātuslbor. English apparatus Learned borrowing fr… The correct English form is apparatus, spelled A-P-P-A-R-A-T-U-S.

Definition

  1. 1
    The entirety of means whereby a specific production is made existent or task accomplished.
  2. 2
    A complex machine or instrument.
  3. 3
    An assortment of tools and instruments.
  4. 4
    A bureaucratic organization, especially one influenced by political patronage.
  5. 5
    A vehicle used for emergency response.
  6. 6
    Any of the equipment on which the gymnasts perform their movements.
  7. 7
    Any of the objects that the gymnasts wield while performing and used as part of the performance itself.
  8. 8
    A complex, highly modified weapon (typically not a firearm); a weaponized “Rube Goldberg machine.”
  9. 9
    In an edition, a system of notations providing information, especially regarding variant readings of a text (a critical apparatus)

Etymology

Etymology tree Proto-Indo-European *h₂éd Proto-Italic *ad Proto-Italic *ad- Latin ad- Proto-Indo-European *perh₃-der. Latin parō Latin apparō Proto-Indo-European *-tus Proto-Italic *-tus Latin -tus Latin apparātuslbor. English apparatus Learned borrowing from Latin apparātus. Doublet of apparat.

This word in other languages

aparato(Español)appareil(Français)Apparat(Deutsch)aparelho(Português)

Common misspellings

Also misspelled as: apapratus,aparatus,appaartus,apparatsu,apparattus,apparatuss,apparauts,apparratus,appartaus,appraatus,paparatus

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of apparatus - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

apapratus2aparatus1appaartus2apparatsu2apparattus1apparatuss1apparauts2apparratus1
Edit distance from "apparatus"

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 "apparatus"?
"apparatus" is spelled A-P-P-A-R-A-T-U-S. The IPA pronunciation is /ˌæp.əˈɹeɪ.təs/.
What does "apparatus" mean?
As a noun, "apparatus" means: The entirety of means whereby a specific production is made existent or task accomplished.
What words are commonly confused with "apparatus"?
"apparatus" is commonly confused with "asparagus". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "apparatus"?
The IPA (International Phonetic Alphabet) transcription for "apparatus" is /ˌæp.əˈɹeɪ.təs/. 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 "apparatus"?
Etymology tree Proto-Indo-European *h₂éd Proto-Italic *ad Proto-Italic *ad- Latin ad- Proto-Indo-European *perh₃-der. Latin parō Latin apparō Proto-Indo-European *-tus Proto-Italic *-tus Latin -tus Latin apparātuslbor. English apparatus Learned bo... 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.

Using “apparatus”

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

  • The one correct English spelling is A-P-P-A-R-A-T-U-S - every other letter order is a misspelling in standard orthography.
  • Say it as /ˌæp.əˈɹeɪ.təs/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “asparagus” - see the side-by-side comparison. apparatus vs asparagus
  • 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