ultrasonic

/ʌltɹəˈsɒnɪk/

//ʌltɹəˈsɒnɪk// adj

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

"ultrasonic" is a 10-letter English headword indexed on PlainSpell.

The verdict

“ultrasonic” has 15 generated spelling variants in the English index at frequency #25,961. The variants make it a useful spelling check.

#25,961
frequency rank, English
1,433
“U” headwords
15
tracked misspellings

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Beyond (higher in frequency than) the range of sound perceptible to the human ear; with a frequency of 20 kilohertz or higher.

Corpus desk

Index EN-ultrasonic · ultrasonic · English

ultrasonic · rank #25,961 · 15 variants · 0 confusables

  • FREQ-MID #25,961
  • LEN-MEGA 10 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-HIGH 15 variants
  • BOOK-MID 1,433
  • PHOTO-FINISH UConn

Nearest frequency peer: UConn (-2 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.

Rank peers near misspelling magnet “ultrasonic”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “ultrasonic” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for ultrasonic
PropertyValue
Headwordultrasonic
LanguageEnglish
Part of speechAdjective
IPA/ʌltɹəˈsɒnɪk/
Letters10
Frequency rank#25,961
Misspellings tracked15
Confusable pairs0
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “ultrasonic”

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).ultrasoniclands here:

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

Scale is logarithmic (each tick is 10× rarer). Same rarity band neighbours include “UConn” (#25,959), “unlawfully” (#25,963), “unwind” (#25,965). Among 1,433 “U” headwords, “ultrasonic” is #25,961. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 15 spelling variants around ultrasonic (IPA /ʌltɹəˈsɒnɪk/), anadjective. Corpus frequency is #25,961 among 1,433 “U” headwords. Dominant gloss: "Beyond (higher in frequency than) the range of sound perceptible to the human ear; with a frequency of 20 kilohertz or higher.".

Our generated misspelling index lists 15 likely wrong-spelling variants for ultrasonic, with forms such as "lutrasonic", "ulltrasonic", and "ulrtasonic". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. Our dataset records no confusable match here, since no other headword is close enough in sound or shape to pair with it.

Etymologically, the entry records: From ultra- + sonic. The correct English form is ultrasonic, spelled U-L-T-R-A-S-O-N-I-C.

Definition

  1. 1
    Beyond (higher in frequency than) the range of sound perceptible to the human ear; with a frequency of 20 kilohertz or higher.

Recorded use

Wiktionary examples

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

  1. The wheel shop also has equipment for ultrasonic testing of axles for flaws; and systematic checking of locomotive axles and crank pins is carried out as they pass through the shops.
  2. When an ultrasonic beam is fired at the microcannons, the emulsion evaporates, expanding rapidly into gas. This creates enough force to push the nanobullets out at velocities reaching several metres per second.

Etymology

From ultra- + sonic.

Antonyms

infrasonic

This word in other languages

ultrasonique(Français)Ultraschall-(Deutsch)

Common misspellings

Also misspelled as:

  • lutrasonic
  • ulltrasonic
  • ulrtasonic
  • ultarsonic
  • ultraosnic
  • ultrasnoic
  • ultrasoinc
  • ultrasonci
  • ultrasonicc
  • ultrasonnic
  • ultrassonic
  • ultrrasonic
  • ultrsaonic
  • ulttrasonic
  • utlrasonic

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of ultrasonic - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

lutrasonic2ulltrasonic1ulrtasonic2ultarsonic2ultraosnic2ultrasnoic2ultrasoinc2ultrasonci2
Edit distance from "ultrasonic"

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 "ultrasonic"?
"ultrasonic" is spelled U-L-T-R-A-S-O-N-I-C. The IPA pronunciation is /ʌltɹəˈsɒnɪk/.
What does "ultrasonic" mean?
As an adjective, "ultrasonic" means: Beyond (higher in frequency than) the range of sound perceptible to the human ear; with a frequency of 20 kilohertz or higher.
What are common misspellings of "ultrasonic"?
Common misspellings include "lutrasonic", "ulltrasonic", "ulrtasonic", "ultarsonic", "ultraosnic". The correct spelling is "ultrasonic".
How do you pronounce "ultrasonic"?
The IPA (International Phonetic Alphabet) transcription for "ultrasonic" is /ʌltɹəˈsɒnɪk/. 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 "ultrasonic"?
From ultra- + sonic. 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 "ultrasonic", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 10 letters (nearest by frequency rank).

unlawfully#25,963Willoughby#25,975salmonella#25,916retrograde#25,906

Similar misspelling depth

Headwords with a similar count of attested misspellings (15 here; floor ≥5).

splashing15 variantsbridesmaid15 variantsclearwater15 variantspersuading15 variants

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

Source: FrequencyWords open word-frequency list