ultrasound
noun
Simple meaning
Sound with a frequency greater than the upper limit of human hearing, which is about 20 kilohertz.
Pronunciation
Say it like this:
uhltruhsowndSay the bold part a little louder.
IPA pronunciation (US)
əltɹəˈsaʊnd
This word is pronounced essentially the same in American and British English, so one transcription covers both.
IPA (International Phonetic Alphabet) is a standard way of writing speech sounds.
Definition
Everyday modern meanings first, grouped by part of speech.
noun
metonymicchiefly informal
Ultrasonography.
physics
Very high frequency sound; used in ultrasonography
physics
Sound with a frequency greater than the upper limit of human hearing, which is approximately 20 kilohertz.
Medical ultrasonography.
Therapeutically applied ultrasonic energy.
Word at a Glance
- Difficulty
- B2 · Upper Intermediate (estimated)
- Frequency
- Moderately Common
- Typical Use
- Neutral / general English
Word Aura™
How this word commonly comes across.
Aura for this meaning
This meaning: Very high frequency sound; used in ultrasonography
Used this way, ultrasound is a specialist word that usually carries little praise or criticism of its own. This is a scientific use: it names something precisely within a field of study, so it appears in research and teaching more than in conversation.
- Emotional tone
- Neutral
- Formality
- Specialist/technical
- Intensity
- Moderate
- How common
- Specialized
- Connotation
- Clinical and technical
- Usage feel
- Technical and specialized
Where it naturally appears
- Science
- Academic writing
- Technical/specialist writing
Usage note
In general conversation this sense usually needs explaining — outside its field, people reach for a plainer word.
Word Aura describes common impressions, not a measurement. Tone changes with sentence, speaker, relationship and situation.
More ways to use ultrasound
- “The doctor used an ultrasound machine to check on the baby's development.”
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Common Patterns and Combinations
How this word naturally appears with others.
High / sound
Treat
Other combinations
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Words can change meaning depending on context.
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Dictionary data from Wiktionary via the Free Dictionary API. Simple meanings, combinations and word intelligence are built from verified reference data, no AI is used to load this page.