INVESTIGATION definition: the act or process of investigating or the condition of being investigated. See examples of investigation used in a sentence.

INVESTIGATION definition: 1. the act or process of examining a crime, problem, statement, etc. carefully, especially to…. Learn more.

An investigation is a systematic, minute, and thorough attempt to learn the facts about something complex or hidden; it is often formal and official: an investigation of a bank failure.

Criminal investigation is an applied science that involves the study of facts that are then used to inform criminal trials. A complete criminal investigation can include searching, interviews, …

Jan 6, 2026 · investigation (countable and uncountable, plural investigations) The act of investigating; the process of inquiring into or following up; research, especially patient or …

INVESTIGATE meaning: 1 : to try to find out the facts about (something, such as a crime or an accident) in order to learn how it happened, who did it, etc.; 2 : to try to get information about …

1. The act or process of investigating: a politician under investigation. 2. A careful examination or search in order to discover facts or gain information. See Synonyms at inquiry.