| average | <statistics> A value that represents the sum of values divided by the number of values in the set. It represents or summarises the relevant features of a set of values. Origin: M.E. Averays, loss from damage to ship or cargo, fr. It. Avaris, fr. Ar. 'awariya, damaged goods, + damage (05 Mar 2000) |
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| average flow rate | <physiology> The flow rate determined by dividing the total volume passed in a time period divided by the time period, usually quoted in mls per minute. (05 Mar 2000) |
| average megawatt | <physics> One megawatt of capacity produced continuously over a period of one year. 1 MWa = 1 MW x 8760 hours/year = 8,760 Mwh = 8,760,000 kWh. Acronym: MWa (05 Dec 1998) |
| average pulse magnitude | <physics> The amplitude of pulse averaged throughout its duration; identical with peak amplitude for a square wave or pulse without droop. (05 Mar 2000) |
| law of average localization | Visceral pain is most accurately localised in the least mobile viscera and least accurately in the most mobile. (05 Mar 2000) |
| angle of deviation | <optics> In a prism, the sum of the angle's of incidence and emergence minus the apical angle of a prism, in optics, angle of refraction, in strabismus, angle of anomaly. (05 Mar 2000) |
| axis deviation | Deflection of the electrical axis of the heart to the right or left of the normal. See: left axis deviation, right axis deviation, axis. Synonym: axis shift. (05 Mar 2000) |
| right axis deviation | A mean electrical axis of the heart pointing to the right of +90 |
| minimal deviation melanoma | <dermatology, tumour> A malignant melanoma showing less cytologic atypia than is usual in melanoma cells showing asymmetric expansile invasion of the dermis. (05 Mar 2000) |
| conjugate deviation of the eyes | Rotation of the eyes equally and simultaneously in the same direction, as occurs normally, a condition in which both eyes are turned to the same side as a result of either paralysis or muscular spasm. (05 Mar 2000) |
| primary deviation | The ocular deviation seen in paralysis of an ocular muscle when the nonparalysed eye is used for fixation. (05 Mar 2000) |
| secondary deviation | Ocular deviation seen in paralysis of an ocular muscle when the paralysed eye is used for fixation. (05 Mar 2000) |
| sexual deviation | A sexual practice that is biologically atypical, considered morally wrong, or legally prohibited. See: bestiality, pedophilia. Synonym: sexual perversion. (05 Mar 2000) |
| skew deviation | A hypertropia in which the eyes move in opposite directions equally; an acquired hypertropia, often fairly comitant, not fitting the characteristic pattern of trochlear nerve damage or of ocular muscle abnormality; often due to a brainstem or cerebellar lesion. (05 Mar 2000) |
| standard deviation | Statistical index of the degree of deviation from central tendency, namely, of the variability within a distribution; the square root of the average of the squared deviation's from the mean. A measure of dispersion or variation used to describe a characteristic of a frequency distribution. (05 Mar 2000) |