| maestricht monitor | <paleontology> The Mosasaurus Hofmanni. See Mosasaurus. Origin: So called from Maestricht, a town in Holland. Source: Websters Dictionary (01 Mar 1998) |
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| monitor | 1. One who admonishes; one who warns of faults, informs of duty, or gives advice and instruction by way of reproof or caution. "You need not be a monitor to the king." (Bacon) 2. Hence, specifically, a pupil selected to look to the school in the absence of the instructor, to notice the absence or faults of the scholars, or to instruct a division or class. 3. <zoology> Any large Old World lizard of the genus Varanus; especially, the Egyptian species (V. Niloticus), which is useful because it devours the eggs and young of the crocodile. It is sometimes five or six feet long. 4. [So called from the name given by Captain Ericson, its designer, to the first ship of the kind] An ironclad war vessel, very low in the water, and having one or more heavily-armored revolving turrets, carrying heavy guns. 5. <machinery> A tool holder, as for a lathe, shaped like a low turret, and capable of being revolved on a vertical pivot so as to bring successively the several tools in holds into proper position for cutting. Monitor top, the raised central portion, or clearstory, of a car roof, having low windows along its sides. Origin: L, fr. Monere. See Monition, and cf. Mentor. Source: Websters Dictionary (01 Mar 1998) |
| monitor, holter | A technique for long-term, continuous cardiac surveillance. A cassette tape is worn by the patient continuously while carrying out his/her usual activities. The patient simultaneously keeps a diary of palpitations or other symptoms during the recording period. Symptoms of palpitations can later be correlated with the presence or absence of arrhythmias (abnormal heart rhythms) on the holter tape. The recordings can be analyzed by a doctor at a later date. Named for the late american biophysicist norman holter. (12 Dec 1998) |
| water monitor | <zoology> A very large lizard (Varanaus salvator) native of India. It frequents the borders of streams and swims actively. It becomes five or six feet long. Called also two-banded monitor, and kabaragoya. The name is also applied to other aquatic monitors. Source: Websters Dictionary (01 Mar 1998) |
| waveform monitor | <microscopy> A cathode-ray oscilloscope that can conveniently display the video signal. See: video waveform. (05 Aug 1998) |
| 24-hour cardiac monitor | <apparatus> A recording device, worn by the patient for the purpose of monitoring the hearts rhythm and rate, over a period of 24 hours. (27 Sep 1997) |
| abdominal pressure | Pressure surrounding the bladder; estimated from rectal, gastric, or intraperitoneal pressure. (05 Mar 2000) |
| absolute pressure | Pressure measured with respect to zero pressure. Compare: gauge pressure. (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) |
| air pressure | The force per unit area that the air exerts on any surface in contact with it. Primarily used for articles pertaining to air pressure within a closed environment. (12 Dec 1998) |
| atmospheric pressure | The pressure at any point in an atmosphere due solely to the weight of the atmospheric gases above the point concerned. (12 Dec 1998) |
| back pressure | Pressure exerted upstream in the circulation as a result of obstruction to forward flow, as when congestion in the pulmonary circulation results from stenosis of the mitral valve or failure of the left ventricle. (05 Mar 2000) |
| back-pressure renal atrophy | <radiology> Caliectasis without obstruction, due to repeated episodes of obstruction, gradual loss of renal pyramids (12 Dec 1998) |
| barometric pressure | The absolute pressure of the ambient atmosphere, varying with weather, altitude, etc.; expressed in millibars (meteorology) or mm Hg or torr (respiratory physiology); at sea level, one atmosphere (atm, 760 mm Hg or torr) is equivalent to: 14.69595 lb/sq in, 1013.25 millibars, 1013.25 × 106 dynes/cm2, and, in SI units, 101,325 pascals (Pa). Synonym: atmospheric pressure. (05 Mar 2000) |
| bile duct pressure | <radiology> Normal: 15-20 cm H2O (12 Dec 1998) |