| AMR | acoustic muscle reflex; activity metabolic rate; acute mitral stenosis; alopecia-mental retardation ... |
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| AN | acanthosis nigricans; acne neonatorum; acoustic neuroma; adult, normal; ala nasi; amyl nitrate; aneu... |
| ANT | acoustic noise test; adenine nucleotide translocator; aminonitrothiazole; anterior |
| ART | absolute retention time; Accredited Record Technician; acoustic reflex test; algebraic reconstructio... |
| EAM | episodic ataxia with myokymia; external acoustic meatus |
| acoustic neurilemoma | <tumour> Schwannoma arising from cranial nerve eight. (05 Mar 2000) |
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| acoustic neuroma | <oncology, tumour> This is a benign tumour of the 8th cranial nerve. This tumour arises from the myelin forming Schwann cells that coat the 8th cranial nerve (acoustic nerve). Clinical presentation usually includes hearing deficit. Diagnosis can be made with auditory evoked potentials and/or MRI scanning of the brain. Vertigo and tinnitus may be associated symptoms. Surgical removal of this tumour involves dissection, cautery and obliteration with laser. Incidence: 1 in 100,000. (13 Nov 1997) |
| acoustic papilla | A prominent ridge of highly specialised epithelium in the floor of the cochlear duct overlying the basilar membrane of cochlea, containing one inner row and three outer rows of hair cells, or cells of Corti (the auditory receptor cells innervated by the cochlear nerve) supported by various columnar cells: the pillars of Corti, cells of Hensen, and cells of Claudius; the spiral organ is partly overhung by an awning-like shelf, the tectorial membrane, the free marginal zone of which is covered by a gelatinous substance in which the stereocilia of the outer hair cells are embedded. Synonym: organum spirale, acoustic papilla, Corti's organ. (05 Mar 2000) |
| acoustic pressure | In ultrasound, the instantaneous value of the total pressure minus the ambient pressure; unit is pascal (Pa). (05 Mar 2000) |
| acoustic radiation | The fibres that pass from the medial geniculate body to the transverse temporal gyri of the cerebral cortex by way of the sublentiform part of the internal capsule. Synonym: radiatio acustica. (05 Mar 2000) |
| acoustic reference level | The biological reference level for sound measurements. When the term decibel is used to indicate the noise level, a reference quantity is implied; this reference value is usually expressed as a sound pressure of 20 micronewtons per square meter. The reference level is referred to as 0 decibels, the baseline of the scale of noise level's; this baseline is considered the weakest sound that can be heard by a person with very good hearing in an extremely quiet location. Other equivalent reference level's still being used include 0.0002 microbar and 0.0002 dyne per square centimeter. (05 Mar 2000) |
| acoustic schwannoma | <tumour> A benign neoplasm of the intracranial segment of the eighth cranial nerve, producing cerebellar, lower cranial nerve, and brainstem signs and symptoms. Synonym: acoustic neuroma, cerebellopontine angle tumour, eighth nerve tumour. (05 Mar 2000) |
| acoustic shadow | Sonographic appearance of reduced echo amplitude from regions lying beyond an attenuating object. Compare: acoustic enhancement. (05 Mar 2000) |
| acoustic spots | See: macula of utricle, macula of saccule. Bitot's spots, small, circumscribed, lusterless, grayish white, foamy, greasy, triangular deposits on the bulbar conjunctiva adjacent to the cornea in the area of the palpebral fissure of both eyes; occurs in vitamin A deficiency. (05 Mar 2000) |
| acoustic striae | Slender fascicles of fibres extending transversally below the ependymal floor of the ventricle from the median sulcus to enter the inferior cerebellar peduncle. They arise from the arcuate nuclei on the ventral surface of the medullary pyramid. Synonym: striae medullares ventriculi quarti, acoustic striae, auditory striae, Bergmann's cords, medullary teniae, teniae acusticae. (05 Mar 2000) |
| acoustic tetanus | Experimental tetanus induced by a faradic current, the speed of which is estimated by the pitch of the vibrations. (05 Mar 2000) |
| acoustic tolerance | The maximum sound pressure level that can be experienced without producing pain or permanent defect of hearing in a normal individual. (05 Mar 2000) |
| acoustic trauma deafness | Sensorineural hearing loss due to overexposure to high intensity noise levels. Synonym: boilermaker's deafness, industrial deafness, occupational deafness. (05 Mar 2000) |
| acoustic tubercle | The slight prominence of the floor of the lateral recess of the fourth ventricle, corresponding to the underlying cochlear and vestibular nuclei. Synonym: acoustic tubercle, trigonum acustici. (05 Mar 2000) |
| acoustic vesicle | One of the paired sacs of invaginated ectoderm that develop into the membranous labyrinth of the internal ear. Synonym: acoustic vesicle, otic vesicle. (05 Mar 2000) |
| transverse crest of internal acoustic meatus | A horizontal ridge that divides the fundus of the internal acoustic meatus into a superior and an inferior area. In the former are the introitus of the facial canal and openings for the branches of the vestibular nerve to the utricle and to the ampullae of the anterior and lateral saemicircular canals. In the latter are openings for the cochlear nerve, and for branches of the vestibular nerve to the saccule and to the ampulla of the posterior saemicircular canal. Synonym: crista transversa, falciform crest, transverse crest. (05 Mar 2000) |
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| external acoustic foramen | The orifice of the external acoustic meatus in the tympanic portion of the temporal bone. Synonym: porus acusticus externus, external acoustic foramen, external acoustic pore, external auditory pore, external auditory foramen, orifice of external acoustic meatus. (05 Mar 2000) |
| external acoustic meatus | The passage leading inward through the tympanic portion of the temporal bone, from the auricle to the tympanic membrane; it consists of a bony (inner) portion and a fibrocartilaginous (outer) portion, the cartilaginous external acoustic meatus. Synonym: meatus acusticus externus, acoustic meatus, antrum auris, auditory canal, external auditory meatus. (05 Mar 2000) |
| external acoustic pore | The orifice of the external acoustic meatus in the tympanic portion of the temporal bone. Synonym: porus acusticus externus, external acoustic foramen, external acoustic pore, external auditory pore, external auditory foramen, orifice of external acoustic meatus. (05 Mar 2000) |
| fundus of internal acoustic meatus | The thin cribriform plate of bone separating the cochlea and vestibule from the internal acoustic meatus; a transverse crest divides it into two regions; in the superior region are located the area nervi facialis and the area vestibularis superior; in the inferior region are located the area cochleae, area vestibularis inferior, and foramen singulare. Synonym: fundus meatus acustici interni, fundus of internal auditory meatus. (05 Mar 2000) |
| acoustic nerve |
a composite sensory nerve supplying the hair cells of the vestibular organ and the hair cells of the cochlea
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| acousticophobia |
phonophobia: a morbid fear of sounds including your own voice
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| acoustics |
the study of the physical properties of sound
출처: wordnet.princeton.edu/perl/webwn
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| acoustic chamber |
a soundproof enclosure used in measuring hearing. See also anechoic c.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| acoustic |
(acous
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| acoustic | the physical intensity of sound |
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| acoustic | (acoustics) the pressure exerted on a surface normal to the direction of propagation of a sound wave |
| acoustic | opposition to the flow of sound through a surface |
| acoustic | opposition to the flow of sound through a surface |
| acoustic | the distribution of energy as a function of frequency for a particular sound source |
| acoustic | a storage device consisting of acoustic delay lines |
| acoustic | (acoustics) a wave that transmits sound |
| acoustic | of or relating to the science of acoustics |
| acoustic | with respect to acoustics |
| acoustic | a physicist who specializes in acoustics |
| acoustic | the study of the physical properties of sound |