Canadian Medical Guide > Physical Sciences > Natural Sciences > Time Terms and Definitions
Time
Medical Definition: | |
Guide Notes: | IM as the abstraction; no qualif; do not confuse with TIME FACTORS, the NIM coord aspect of a given subject; "diurnal" & "nocturnal": consider preferably CIRCADIAN RHYTHM |
Also Called: | Longterm Effects |
Chronology | |
Half-Life - The time it takes for a substance (drug, radioactive nuclide, or other) to lose half of its pharmacologic, physiologic, or radiologic activity. | |
Photoperiod - The time period of daily exposure that an organism receives from daylight or artificial light. It is believed that photoperiodic responses may affect the control of energy balance and thermoregulation. | |
Time Factors - Elements of limited time intervals, contributing to particular results or situations. |
Time Medical Definitions and Terms
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