ultrasound

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ul·tra·sound

 (ŭl′trə-sound′)
n.
1. Ultrasonic sound.
2.
a. The use of ultrasonic waves for diagnostic or therapeutic purposes, specifically to image an internal body structure, monitor a developing fetus, or generate localized deep heat to the tissues.
b. An image produced by ultrasound.

ultrasound

(ˈʌltrəˌsaʊnd)
n
(General Physics) ultrasonic waves at frequencies above the audible range (above about 20 kHz), used in cleaning metallic parts, echo sounding, medical diagnosis and therapy, etc

ul•tra•sound

(ˈʌl trəˌsaʊnd)

n.
1. sound with a frequency greater than 20,000 Hz, approximately the upper limit of human hearing.
2. Med. the application of ultrasonic waves to therapy or diagnostics, as in deep-heat treatment of a joint or in ultrasonography.
[1920–25]

ul·tra·sound

(ŭl′trə-sound′)
1. Sound whose wave frequency is too high (over 20,000 hertz) to be heard by humans.
2. The medical use of ultrasound waves, especially to produce images of the inside of the body or to observe a developing fetus.

ultrasonic (ŭl′trə-sŏn′ĭk) adjective
Did You Know? Many people own and use simple ultrasound generators: dog whistles that produce tones that dogs can hear but are too high to be heard by humans. Any sound whose frequency is higher than the upper end of the normal range of human hearing (higher than 20,000 hertz—that is, 20,000 sound waves per second) is called ultrasound. (Sound at frequencies too low to be audible—about 20 hertz or lower—is called infrasound.) The familiar medical ultrasound images (of a fetus in the womb, for example) are made by directing ultrasonic waves into the body, where they bounce off internal organs and other objects and are reflected back to a detector. Ultrasonic waves have very short wavelengths, and so they can create images of very small objects. Ultrasound can also be used to focus large amounts of energy into very small spaces, making it possible, for example, to break up kidney stones without making any surgical incisions.

ultrasound

, ultrasonography - Ultrasounds and ultrasonography work on the principle that sound is reflected at different speeds by tissues or substances of different densities.
See also related terms for reflected.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.ultrasound - very high frequency soundultrasound - very high frequency sound; used in ultrasonography
sound - mechanical vibrations transmitted by an elastic medium; "falling trees make a sound in the forest even when no one is there to hear them"
2.ultrasound - using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram)ultrasound - 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
prenatal diagnosis - any of the diagnostic procedures used to determine whether a fetus has a genetic abnormality
tomography, imaging - (medicine) obtaining pictures of the interior of the body
A-scan ultrasonography - the use of ultrasonography to measure the length of the eyeball
B-scan ultrasonography - the use of ultrasonography to view structure in the back of the eye
Translations
ultrazvuk
ultralyd
ultraääni
ultrazvuk
ultrahang
超音波
초음파
ultragarsas
ultraskana
ultrazvuk
ultraljud
คลื่นเสียงที่มีความถี่สูง
işitim ötesi sesultrason
sóng siêu âm

ultrasound

[ˈʌltrəsaʊnd]
A. Nultrasonido m
B. CPD ultrasound scan Necografía f

ultrasound

[ˈʌltrəsaʊnd] nultrason multrasound scan néchographie f

ultrasound

[ˌʌltrəˈsaʊnd] n (Med) → ecografia

ultrasound

(altresaund) noun
ultrasonic sound, used especially in scanners, that can show what is inside a person's body.

ultrasound

مَوْجاتٌ فَوْقَ صَوْتِيَّة ultrazvuk ultralyd Ultraschall υπέρηχος ecografía, ultrasonido ultraääni échographie ultrazvuk ecografia 超音波 초음파 ultrasone klank ultralyd ultradźwięk ultra-som ультразвук ultraljud คลื่นเสียงที่มีความถี่สูง ultrason sóng siêu âm 超频率音响

ul·tra·sound

n. ultrasonido, ondas de frecuencia superior a las del oído humano que se usan en ultrasonografía en procedimientos terapéuticos y de diagnóstico;
abdominal ______ abdominal;
breast ______ de la mama;
pregnancy ______ del embarazo;
thyroid ______ de la tiroides.

ultrasound

adj ultrasónico; n ultrasonido; (fam, imaging study) ecografía