| AC | abdominal circumference; abdominal compression; absorption coefficient; abuse case; acetate; acetylc... |
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| SLIC | scanning liquid ionization chamber |
| AID | acquired immunodeficiency disease; acute infectious disease; acute ionization detector; Agency for I... |
| A/C | albumin/coagulin [ratio]; anterior chamber of eye; assist control [ventilation] |
| A2C | apical two-chamber [view] |
| AC | Anterior Chamber |
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| ACAID | Anterior Chamber Associated Immune Deviation |
| ACD | Anterior chamber depth |
| PC | Posterior chamber |
| PC IOL | posterior chamber intraocular lens |
| ionization chamber | A chamber for detecting ionization of the enclosed gas; used for determining intensity of ionizing radiation. (05 Mar 2000) |
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| spectrometry, mass, matrix-assisted laser desorption-ionization | A mass spectrometric technique that is used for the analysis of large biomolecules. Analyte molecules are embedded in an excess matrix of small organic molecules that show a high resonant absorption at the laser wavelength used. The matrix absorbs the laser energy, thus inducing a soft disintegration of the sample-matrix mixture into free (gas phase) matrix and analyte molecules and molecular ions. In general, only molecular ions of the analyte molecules are produced, and almost no fragmentation occurs. This makes the method well suited for molecular weight determinations and mixture analysis. (12 Dec 1998) |
| ionization | <chemistry, radiobiology> Any process by which a neutral atom gains or loses electrons, thus acquiring a net charge, as the dissociation of a substance in solution into ions or ion production by the passage of radioactive particles. High temperatures, electrical discharges or nuclear radiations can cause ionisation. (16 Dec 1997) |
| flame ionization | Pyrolysis of organic compounds at the temperature of a hydrogen-air flame to produce ionic intermediates which can be collected and the resulting ion current measured by gas chromatography. (12 Dec 1998) |
| abnormal heart chamber dimensions | <radiology> Left ventricular volume overload, left ventricular hypertrophy, right ventricular volume overload, right ventricular hypertrophy, fixed subvalvular aortic stenosis, hypoplastic left/right ventricle; common ventricle, congestive cardiomyopathy (12 Dec 1998) |
| air chamber | 1. A chamber or cavity filled with air, in an animal or plant. 2. A cavity containing air to act as a spring for equalizing the flow of a liquid in a pump or other hydraulic machine. Source: Websters Dictionary (01 Mar 1998) |
| altitude chamber | A decompression chamber for simulating a high altitude environment, particularly its low barometric pressure. Synonym: high altitude chamber. (05 Mar 2000) |
| anechoic chamber | A room designed to absorb all sound so as to eliminate all echoes; used for isolation and sound research on human subjects. (05 Mar 2000) |
| anterior chamber | The space in the eye, filled with aqueous humor, bounded anteriorly by the cornea and a small portion of the sclera and posteriorly by a small portion of the ciliary body, the iris, and that part of the crystalline lens which presents through the pupil. (12 Dec 1998) |
| anterior chamber cleavage syndrome | <syndrome> A congenital disorder originating from faulty separation of embryonic structures; it results in bilateral central corneal opacities, with an anterior ring attachment of the iridic pupillary border and anterior polar cataracts; associated with short-limbed dwarfism; autosomal dominant inheritance. See: iridocorneal endothelial syndrome. Synonym: Peters' anomaly. (05 Mar 2000) |
| anterior chamber of eye | The space between the cornea anteriorly and the iris/pupil posteriorly, filled with a watery fluid (aqueous humor) and communicating through the pupil with the posterior chamber. Synonym: camera anterior bulbi, camera oculi anterior, camera oculi major. (05 Mar 2000) |
| anterior chamber trabecula | Tissue at the angle of the anterior chamber through which aqueous humor exits from the eye. (05 Mar 2000) |
| baffle chamber | In incinerator design, a chamber designed to settle fly ash and coarse particulate matter by changing the direction and reducing the velocity of the combustion gases. (05 Dec 1998) |
| Boyden chamber | <apparatus> Simple chamber used to test for chemotaxis, especially of leucocytes. Consists of two compartments separated by a millipore filter (3-8 m pore size), chemotactic factor is placed in one compartment and the gradient develops across the thickness of the filter (ca 150 m). Cell movement into the filter is measured after an incubation period less than the time taken for the gradient to decay. See: checkerboard assay. (18 Nov 1997) |
| relief chamber | A recess in the impression surface of a denture to reduce or eliminate pressure from that specific area of the mouth. (05 Mar 2000) |
| tissue-equivalent ionization chamber |
an ionization chamber in which the walls, electrodes, and gas are selected to produce ionization essentially equivalent to that which would occur in the tissue under consideration.
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