volume of distribution

(symbol: V_d) the amount of a drug in the body in relation to its concentration in various body fluids (e.g., blood, plasma, extracellular fluid). It is expressed by the equation V_d = dose (amount of drug in body)/concentration in body fluid.

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Psychology term of the day

January 19th 2025

developmental milestone

any aspect of physical, cognitive, social, or emotional development that is significant and predictable, such that children throughout the world develop this ability, characteristic, or behavior at about the same time. Developmental milestones include presence of first teeth and language acquisition.