| sustained release tablet | A drug product formulation that provides the required dosage initially and then maintains or repeats it at desired intervals. Synonym: prolonged action tablet, repeat action tablet. (05 Mar 2000) |
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| sustained yield | The maintenance in perpetuity of regular, periodic harvest of wood resources from forest land without damaging the productivity of the land. (05 Dec 1998) |
| attention | Focusing on certain aspects of current experience to the exclusion of others. It is the act of heeding or taking notice or concentrating. (12 Dec 1998) |
| attention deficit disorder | An inability to control behaviour due to difficulty in processing neural stimuli. (12 Dec 1998) |
| attention deficit disorder with hyperactivity | A behaviour disorder originating in childhood in which the essential features are signs of developmentally inappropriate inattention, impulsivity, and hyperactivity. Although most individuals have symptoms of both inattention and hyperactivity-impulsivity, one or the other pattern may be predominant. The disorder is more frequent in males than females. Onset is in childhood. Symptoms often attenuate during late adolescence although a minority experience the full complement of symptoms into mid-adulthood. (12 Dec 1998) |
| attention deficit hyperactivity disorder | <psychiatry> A condition seen in children where there is increased motor activity in association with poor attention span. Often treated with amphetamine medications. (27 Sep 1997) |