n 1 a  :  a mass or weight put on something  b  :  the amount of stress put on something <this normal instinctive fear which adds its to the nervous system -H. G. Armstrong>   c  :  an amount of something (as food or water) added to the body or available for use in some physiological process <the cell's response to an increased metabolic -Emergency Medicine>   2  :  the number or quantity (as of patients) to be accommodated or treated <the patient of physicians in private practice -Jour. Amer. Med. Assoc.>   3  :  BURDEN <the worm in rats>   4  :  GENETIC LOAD
vt 1  :  to put a load in or on <rabbits were edwith … pyruvate by intravenous injections -Experiment Station Record>   2  :  to weight (as a test or experimental situation) with factors influencing validity or outcome  3  :  to change by adding an adulterant or drug <patent medicines were edwith narcotics -D. W. Maurer & V. H. Vogel>  .
 
 
 
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