Addiction: Central nervous system (CNS) stimulants are addictive, even if they are not abused. Many factors, including the patient's personal history, the type of stimulant that is being taken, the dose of the drug, and duration of use, influence how likely an individual is to become addicted.
The source of all waves - mechanical or electromagnetic - is something that is vibrating. Matthew Donovan.
Definition of source for Students. 1  1 : a cause or starting point the source of a rumor. 2  2 : the beginning of a stream of water the source of the Nile River. 3  3 : someone or something that supplies information a reference source. 4  4 : someone or something that provides what is needed a source of supplies a source of strength.