Operational definitions are at their most controversial in the field of psychology where intuitive concepts, such as intelligence need to be operationally defined before they become amenable to scientific investigation, for example, through processes such as IQ tests.
Ven (sign: VEN) is a global digital currency traded in international financial markets and originally used by members of a social network service, Hub Culture, to buy, share, and trade knowledge, goods, and services.
PRN is an abbreviation that comes from the Latin term pro re nata.. Its actual translation to English is for the thing born, but its common medical meaning is as needed.. It used to identify a medication that can be taken as the patient needs it rather than on a fixed schedule.