noun · verb · 7 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
/ʌl.tɹə.saʊnd/
Australian:/ɔl.t͡ʃɹə.sæɔnd/
Australian:[ɔʊ̯.t͡ʃɹə.sæɔ̯nd]
Australian:[ɔɫ.t͡ʃɹə.sæɔ̯nd]
Southern-England:Recorded audio is listed in the source snapshot.
CMU ARPABET:AH2 L T R AH0 S AW1 N D
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
Sound with a frequency greater than the upper limit of human hearing, which is approximately 20 kilohertz.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
noun
Meaning 4
Therapeutically applied ultrasonic energy.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
5
verb
Meaning 5
To treat (someone or something) with ultrasound.
Definition source: English Wiktionary via Wiktextract
Usage: ambitransitive
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
6
noun
Meaning 6
using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram); commonly used to observe fetal growth or study bodily organs
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
very high frequency sound; used in ultrasonography
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: sound
History
Etymology
Etymology tree Proto-Indo-European *h2el- Latin ūls Proto-Indo-European *-teros? Latin -ter Old Latin -ād Latin -ā Latin ultrābor. English ultra- English sound English ultrasound From ultra- + sound.
Across languages
Translations
90 source translations are retained for this English entry.