| absorbed dose | The amount of energy absorbed per unit mass of irradiated material at the target site; in radiation therapy, the former unit for absorbed dose is the rad; the current (S.I.) unit is the gray. (05 Mar 2000) |
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| biclonal peak | Two narrow electrophoretic bands thought to represent immunoglobulin of two cell lines. (05 Mar 2000) |
| peak | The top or upper limit of a graphic tracing or of any variable. Origin: M.E. Peke, pike, fr. Sp. Pico, beak, fr. L. Picus, magpie (05 Mar 2000) |
| peak expiratory flow | The maximum flow at the outset of forced expiration, which is reduced in proportion to the severity of airway obstruction, as in asthma. (05 Mar 2000) |
| peak expiratory flow rate | Measurement of the maximum rate of airflow attained during a forced vital capacity determination. Common abbreviations are pefr and pfr. (12 Dec 1998) |
| peak flow | <chest medicine, physiology> The maximum flow rate of air breathed out during forced expiration. (15 Nov 1997) |
| peak flow rate | Maximum urinary flow rate during voiding as measured by a uroflowmeter. (05 Mar 2000) |
| peak magnitude | The greatest amplitude. (05 Mar 2000) |
| peak plasma drug concentration | <pharmacology> The highest level of drug that can be obtained in the blood usually following multiple doses. (09 Oct 1997) |
| monoclonal peak | A narrow band visible on electrophoresis or an abnormal arc seen on immunoelectrophoresis, thought to represent immunoglobulin of one cell clone. (05 Mar 2000) |
| widow's peak | A sharp point of hair growth in the midline of the anterior scalp margin, usually resulting from recession of hair of the temple areas, or occurring as a congenital configuration of scalp hair. (05 Mar 2000) |
| juxtaphrenic peak | On chest radiograph, a triangular density on top of the right diaphragmatic shadow, probably caused by tension of the phrenic nerve on the pleura over the diaphragm. (05 Mar 2000) |
| air dose | The radiation dose, expressed in roentgens, delivered at a point in free air. Synonym: air dose. (05 Mar 2000) |
| bone marrow dose | The cumulative dose to the blood-forming organ from therapeutic or nuclear fallout irradiation; the presumed leukemogenic dose. (05 Mar 2000) |
| booster dose | A dose given at some time after an initial dose to enhance the effect, said usually of antigens for the production of antibodies. (05 Mar 2000) |