IPA: /ˈkrɪmɪnəlɪst/
KK: /ˈkrɪmɪnəlɪst/
A person who is an expert in gathering and analyzing physical evidence related to crimes.
The criminalist carefully examined the evidence found at the crime scene.
Criminalist is formed from "criminal" (from Latin "criminalis", meaning relating to crime) and "-ist" (meaning one who practices or is concerned with). The word refers to a person who specializes in the study or practice of crime and criminal behavior.
Think of someone who is an expert in matters related to crime ('criminal') and the '-ist' indicates a person who practices that field. This helps you remember that a criminalist is someone who studies or works in the area of crime.