42 CFR § 2a.2 - Definitions.
(a) Secretary means the Secretary of Health and Human Services and any other officer or employee of the Department of Health and Human Services to whom the authority involved has been delegated.
(b) Person means any individual, corporation, government, or governmental subdivision or agency, business trust, partnership, association, or other legal entity.
(c) Research means systematic study directed toward new or fuller knowledge and understanding of the subject studied. The term includes, but is not limited to, behavioral science studies, surveys, evaluations, and clinical investigations.
(f) Administer refers to the direct application of a drug to the body of a human research subject, whether such application be by injection, inhalation, ingestion, or any other means, by (1) a qualified person engaged in research (or, in his or her presence, by his or her authorized agent), or (2) a research subject in accordance with instructions of a qualified person engaged in research, whether or not in the presence of a qualified person engaged in research.
(g) Identifying characteristics refers to the name, address, any identifying number, fingerprints, voiceprints, photographs or any other item or combination of data about a research subject which could reasonably lead directly or indirectly by reference to other information to identification of that research subject.
(h) Psychoactive drug means, in addition to alcohol, any drug which has as its principal action an effect on thought, mood, or behavior.