The meaning of INVESTIGATION is the action or process of investigating : detailed examination : study, research. How to use investigation in a sentence.

What does investigation mean? An investigation is a thorough search for facts, especially those that are hidden or need to be sorted out in a complex situation. The goal of an investigation is …

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

Definition of investigation noun from the Oxford Advanced Learner's Dictionary. an official examination of the facts about a situation, crime, etc. The president has promised a full …

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.

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.

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, …

Nov 10, 2025 · investigation (countable and uncountable, plural investigations) The investigation into the crime has led to various leads as well as plenty of dead ends. Despite thorough …

Police began an investigation into/of the incident. Investigators revealed their findings.

investigation definition: careful process to find out facts or information. Check meanings, examples, usage tips, pronunciation, domains, and related words. Discover expressions like …