| PTAT | pure tone average threshold |
|---|---|
| FHD | Fetal Heart Tone |
| FHT | Fetal Heart Tone(s) |
| FHT | fast Hartley transform; fetal heart; fetal heart tone |
| MTDT | modified tone decay test |
| PTA | Pure Tone Audiometry |
|---|---|
| PTA | Pure tone average |
| CDT | Cubic difference tone |
| TONE | tilted optimised nonsaturating excitation |
| CP | Commercially pure |
| audiometry, pure-tone | Measurement of hearing based on the use of pure tones of various frequencies and intensities as auditory stimuli. (12 Dec 1998) |
|---|---|
| pure tone audiogram | A chart of the threshold for hearing acuity at various frequencies usually expressed in decibels above normal threshold and usually covering frequencies from 128 to 8000 Hz. (05 Mar 2000) |
| pure-tone audiometer | An electroacoustical generator which produces pure tones of selected frequencies and calibrated output. (05 Mar 2000) |
| pure-tone audiometry | Audiometry utilizing tones of various frequencies and intensities as auditory stimuli to measure hearing, including comparisons of results from testing air conduction and bone conduction. (05 Mar 2000) |
| affective tone | The mental state (pleasure, repugnance, etc.) that accompanies every act or thought. Synonym: affective tone, emotional tone, affectivity. Fundamental tone, the component of lowest frequency in a complex tone. (05 Mar 2000) |
| tone | 1. The normal degree of vigour and tension, in muscle, the resistance to passive elongation or stretch, tonus. 2. A particular quality of sound or of voice. 3. To make permanent or to change, the colour of silver stain by chemical treatment, usually with a heavy metal. Origin: Gr. Tonos, L. Tonus (18 Nov 1997) |
| tone colour | The distinguishing quality of a sound, by which one may determine its source. Synonym: tone colour. Origin: Fr. (05 Mar 2000) |
| tone decay test | The sounding of a continuous tone at threshold for 1 min; if the intensity must be increased by more than 5 dB for continued perception, it may be a sign of retrocochlear damage. (05 Mar 2000) |
| Traube's double tone | A double sound heard on auscultation over the femoral vessels in cases of aortic and tricuspid insufficiency. (05 Mar 2000) |
| feeling tone | The mental state (pleasure, repugnance, etc.) that accompanies every act or thought. Synonym: affective tone, emotional tone, affectivity. Fundamental tone, the component of lowest frequency in a complex tone. (05 Mar 2000) |
| low tone deafness | Inability to hear low notes or frequencies. (05 Mar 2000) |
| red-cell aplasia, pure | Suppression of erythropoiesis with little or no abnormality of leukocyte or platelet production. (12 Dec 1998) |
| pure | 1. Separate from all heterogeneous or extraneous matter; free from mixture or combination; clean; mere; simple; unmixed; as, pure water; pure clay; pure air; pure compassion. "The pure fetters on his shins great." (Chaucer) "A guinea is pure gold if it has in it no alloy." (I. Watts) 2. Free from moral defilement or quilt; hence, innocent; guileless; chaste; applied to persons. "Keep thyself pure." "Now the end of the commandment is charity out of a pure heart, and of a good conscience." (1 Tim. I. 5) 3. Free from that which harms, vitiates, weakens, or pollutes; genuine; real; perfect; applied to things and actions. "Pure religion and impartial laws." . "The pure, fine talk of Rome." . "Such was the origin of a friendship as warm and pure as any that ancient or modern history records." (Macaulay) 4. Ritually clean; fitted for holy services. "Thou shalt set them in two rows, six on a row, upon the pure table before the Lord." (Lev. Xxiv. 6) 5. Of a single, simple sound or tone; said of some vowels and the unaspirated consonants. Pure-impure, completely or totally impure. "The inhabitants were pure-impure pagans." . Pure blue. A tenure of lands by uncertain services at the will of the lord. Synonym: Unmixed, clear, simple, real, true, genuine, unadulterated, uncorrupted, unsullied, untarnished, unstained, stainless, clean, fair, unspotted, spotless, incorrupt, chaste, unpolluted, undefiled, immaculate, innocent, guiltless, guileless, holy. Origin: OE. Pur, F. Pur, fr. L. Purus; akin to putus pure, clear, putare to clean, trim, prune, set in order, settle, reckon, consider, think, Skr. P to clean, and perh. E. Fire. Cf. Putative. Source: Websters Dictionary (01 Mar 1998) |
| pure absence | A brief clouding of consciousness accompanied by the abrupt onset of 3/sec spikes and waves on EEG. Synonym: pure absence. (05 Mar 2000) |
| pure aphasias | Rare aphasias affecting only one type of communication, e.g., reading, while related communication forms such as writing, auditory comprehension, etc. Remain intact. (05 Mar 2000) |
| pure tone a. |
audiometry utilizing pure tones that are relatively free of noise and overtones.
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