| 3DCT | three-dimensional computed tomography |
|---|---|
| DDD | CT double-dose-delay computed tomography |
| 3DQCT | three-dimensional computed tomography |
| EBCT | electron-beam computed tomography |
| ECT | electroconvulsive therapy; emission computed tomography; enteric coated tablet; euglobulin clot test... |
| high-pass filter | A device or material that allows high frequency signals to pass while attenuating other signals. (05 Mar 2000) |
|---|---|
| high-performance liquid chromatography | <investigation> A lab technique, a type of column chromatography, which uses a combination of several separation techniques to separate substances at higher resolution. Extremely sharp peaks on the elution profile can be produced with high-performance liquid chromatography (HPLC). (09 Oct 1997) |
| high-pressure | 1. Having or involving a pressure greatly exceeding that of the atmosphere; said of steam, air, water, etc, and of steam, air, or hydraulic engines, water wheels, etc. 2. Urgent; intense; as, a high-pressure business or social life. High-pressure engine, an engine in which steam at high pressure is used. It may be either a condensing or a noncondensing engine. Formerly the term was used only of the latter. See Steam engine. Source: Websters Dictionary (01 Mar 1998) |
| high-pressure liquid chromatography | <investigation> A lab technique, a type of column chromatography, which uses a combination of several separation techniques to separate substances at higher resolution. Extremely sharp peaks on the elution profile can be produced with high-performance liquid chromatography (HPLC). (09 Oct 1997) |
| high pressure nervous syndrome | <syndrome> A syndrome of tremors, nausea, dizziness, and decreased motor and mental performance which develops in those who dive deeply (c. 1000 ft) usually breathing a mixture of oxygen and helium. Nitrogen is not a factor as it is in inert gas narcosis. (12 Dec 1998) |
| high priest | A chief priest; especially, the head of the Jewish priesthood. Source: Websters Dictionary (01 Mar 1998) |
| high quality filter paper | Used in paper chromatography. Synonym: high quality filter paper. Congo red paper, paper impregnated with Congo red; used as a pH indicator, changing from blue-violet at 3.0 to red at 5.0. Filter paper, an unsized paper used in pharmacy and chemistry for filtering solutions; many varieties are used for paper chromatography. (05 Mar 2000) |
| high-sounding | Pompous; noisy; ostentatious; as, high-sounding words or titles. Source: Websters Dictionary (01 Mar 1998) |
| high spinal anaesthesia | Spinal anaesthesia in which the level of sensory denervation extends to the second or third thoracic dermatome. (05 Mar 2000) |
| high steppage gait | A gait in which the foot is raised high to avoid catching a drooping foot and brought down suddenly in a flapping manner; often seen in peroneal nerve palsy and tabes. Synonym: equine gait. (05 Mar 2000) |
| high-stomached | Having a lofty spirit; haughty. Source: Websters Dictionary (01 Mar 1998) |
| high tide line | The line of intersection of the land with the water's surface at the maximum height reached by a rising tide. The high tide line may be determined, in the absence of actual data, by a line of oil or scum along shore objects, a more or less continuous deposit of fine shell or debris on the foreshore or berm, other physical markings or characteristics, vegetation lines, tidal gages, or other suitable means that delineate the general height reached by a rising tide. The line encompasses spring high tides and other high tides that occur with periodic frequency but does not include storm surges in which there is a departure from the normal or predicted reach of the tide due to the piling up of water against a coast by strong winds such as those accompanying a hurricane or other intense storm. (09 Oct 1997) |
| high wine | The strong spirit obtained by rectification or redistillation of low wine in making whisky. (05 Mar 2000) |
| immunologic high dose tolerance | Induction of tolerance by exposure to large amounts of protein antigens. (05 Mar 2000) |
| ordinary high water mark | <marine biology> That line on the shore established by the fluctuations of water and indicated by physical characteristics such as clear, natural line impressed on the bank, shelving, changes in the character of the soil, destruction of terrestrial vegetation, the presence of litter and debris, or other appropriate means that consider the characteristics of the surrounding areas. (11 Jan 1998) |