: a statement that is known or believed by its maker to be incorrect or untrue and is made esp. with intent to deceive or mislead [submitted a false statement to obtain the loan]. ;also.
Also found in: Dictionary, Thesaurus, Acronyms, Encyclopedia, Wikipedia. pharmacokinetics. the study of the movement of drugs in the body, including the processes of absorption, distribution, localization in tissues, biotransformation, and excretion. adj., adj pharmacokinetÂ´ic.
Pharmacokinetics of nicotine. Pharmacokinetics refers to what the body does to a substance, while pharmacodynamics refers to what a substance does to the body. After inhaling tobacco smoke, nicotine rapidly enters the bloodstream, crosses the blood-brain barrier and is inside the brain within eight to twenty seconds.