investigational

In clinical trials, refers to a drug (including a new drug, dose, combination, or route of administration) or procedure that has undergone basic laboratory testing and received approval from the U.S. Food and Drug Administration (FDA) to be tested in human subjects. A drug or procedure may be approved by the FDA for use in one disease or condition,...
Found on http://www.cancer.gov/dictionary?expand=I

Investigational

Part of a detailed inquiry; part of a systematic examination often applied to new drugs or therapies undergoing evaluation for human treatments.
Found on http://www.encyclo.co.uk/local/21438
No exact match found