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retardation |
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retardation: see mental retardation mental retardation, below average level of intellectual functioning, usually defined by an IQ of below 70 to 75, combined with limitations in the skills necessary for daily living. ..... Click the link for more information. . retardation [‚rē‚tär′dā·shən] (medicine) Slow mental or physical functioning. (navigation) The amount of delay in time or phase angle introduced by the resistivity of the surface over which the radio wave in radio navigation is passing. (oceanography) The amount of time by which corresponding tidal phases grow later day by day, averaging approximately 50 minutes. (optics) In interference microscopy, the difference in optical path between the light passing through the specimen and the light bypassing the specimen. Also known as optical-path difference. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The psychomotor retardation is the first thing to go, existential sadness is the last thing to go," so there is a critical risk period when people have the energy to act on their suicidal thoughts and feelings. Children exposed in utero to even low doses of mercury can develop a range of more serious problems--from psychomotor retardation (including delays in speech or walking) to birth defects involving severe brain damage. |
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