| ESP | early systolic paradox; echo spacing; effective sensory projection; effective systolic pressure; end... |
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| MEC | median effective concentration; middle ear canal; middle ear cell; minimum effective concentration |
| HL | Half Life |
| Tb | biologic Half-Life |
| Tp | Physical Half-Life |
| effective osmotic pressure | That part of the total osmotic pressure of a solution that governs the tendency of its solvent to pass across a boundary, usually a semipermeable membrane; it is commonly represented by the product of the total osmotic pressure of the solution and the ratio (corrected for activities) of the number of dissolved particles that do not permeate the bounding membrane to the total number of particles in the solution; equivalent in meaning to tonicity; commonly expressed in equivalent units of osmolality rather than pressure per se. (05 Mar 2000) |
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| effective refractory period | The period during which impulses may appear but are too weak to be conducted; the longest interval between adequate stimuli, falling just short of the time necessary to allow a propagated response to be evoked in a tissue by the second stimulus; it differs from the functional refractory period in that it is a measure of stimulus interval rather than response interval of time. (05 Mar 2000) |
| effective renal blood flow | The amount of blood flowing to the parts of the kidney that are involved with production of constituents of urine. (05 Mar 2000) |
| effective renal plasma flow | <physiology> The amount of plasma flowing to the parts of the kidney that have a function in the production of constituents of urine; the clearance of substances such as iodopyracet and p-aminohippuric acid, assuming that the extraction ratio in the peritubular capillaries is 100%. It is the amount of plasma perfusing the kidney tubules per unit time, generally measured by p-aminohippurate clearance. It should be differentiated from renal plasma flow which is approximately 10% greater than the effective renal plasma flow. (07 Mar 2000) |
| effective temperature | A comfort index or scale which takes into account the temperature of air, its moisture content, and movement. (05 Mar 2000) |
| effective temperature index | A composite index of environmental comfort which is compared after exposure to different combinations of air temperature, humidity, and movement. (05 Mar 2000) |
| red half-moon | <clinical sign> Irregular red discoloration of the usually pale demilune at the base of the fingernail; may be seen in congestive failure, malignant disease, or liver disease, but not specific for any of these. (05 Mar 2000) |
| half | In an equal part or degree; in some pa appromating a half; partially; imperfectly; as, half-coloured, half done, half-hearted, half persuaded, half conscious. "Half loth and half consenting." "Their children spoke halfin the speech of Ashdod." (Neh. Xiii. 24) 1. Consisting of a moiety, or half; as, a half bushel; a half hour; a half dollar; a half view. The adjective and noun are often united to form a compound. 2. Consisting of some indefinite portion resembling a half; approximately a half, whether more or less; partial; imperfect; as, a half dream; half knowledge. "Assumed from thence a half consent." (Tennyson) Half ape, a middle or intermediate tint, as in drawing or painting. See Demitint. Half truth, a statement only partially true, or which gives only a part of the truth. Half year, the space of six moths; one term of a school when there are two terms in a year. Origin: AS. Healf, half, half; as a noun, half, side, part; akin to OS, OFries, & D. Half, G. Halb, Sw. Half, Dan. Halv, Icel. Halfr, Goth. Halbs. Cf. Halve, Behalf. Source: Websters Dictionary (01 Mar 1998) |
| half-a-gram stain | <technique> A lab technique used to detect the presence of members from the bacterial family Legionellaceae in samples of sputum. (09 Oct 1997) |
| half amplitude pulse duration | The time, in milliseconds, required for a wave form to reach half of its full magnitude. (05 Mar 2000) |
| half-axial projection | Reverse tilted AP radiographic projection devised to permit demonstration of the entire occipital bone, foramen magnum, and dorsum sellae, as well as the petrous ridges. Synonym: half axial view, half-axial projection, Towne view. (05 Mar 2000) |
| half axial view | Reverse tilted AP radiographic projection devised to permit demonstration of the entire occipital bone, foramen magnum, and dorsum sellae, as well as the petrous ridges. Synonym: half axial view, half-axial projection, Towne view. (05 Mar 2000) |
| half blood | 1. The relation between persons born of the same father or of the same mother, but not of both; as, a brother or sister of the half blood. See Blood, 2 and 4. 2. A person so related to another. 3. A person whose father and mother are of different races; a half-breed. In the 2d and 3d senses usually with a hyphen. Source: Websters Dictionary (01 Mar 1998) |
| half-blooded | 1. Proceeding from a male and female of different breeds or races; having only one parent of good stock; as, a half-blooded sheep. 2. Degenerate; mean. Source: Websters Dictionary (01 Mar 1998) |
| half-bred | 1. Half-blooded. 2. Imperfectly acquainted with the rules of good-breeding; not well trained. Source: Websters Dictionary (01 Mar 1998) |