SINCE 1828
investigator
noun
in·ves·ti·ga·tor
| \ in-ˈve-stə-ˌgā-tər
\
\
plural investigators
Definition of investigator
: one who investigates something: such as
a
detective
a private investigator Debra Winger plays the investigator who becomes fixated on identifying a killer …— Margaret Rauch
b
: a person who conducts experiments or is involved in scientific studies for research
the lead investigator in a clinical trial For dialect recording, it is best for the investigator to take down as full and accurate notes as possible without slowing down the pace of the interview.— Ravin I. McDavid Jr.
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