Of, or relating to investigating, or to an investigation. / (medicine) of, or relating to an unapproved drug or chemical entity being studied.

(chiefly philosophy and sciences) Capable of being investigated or studied.

(chiefly philosophy and sciences) The state or condition of being capable of being investigated.

A form of journalism in which the reporter deeply investigates a single topic of interest, often involving crime or corruption.

A journalist investigating a single topic of interest, often involving crime or corruption.

plural of private investigator

An agent hired by a private party for the purpose of investigation or evidence gathering.

plural of principal investigator

(sciences) lead researcher on a grant-funded project

Alternative spelling of reinvestigation