What does entomologist mean?
An entomologist is a scientist who specialises in the study of insects — the most diverse group of animals on Earth, with roughly a million described species. The work of an entomologist can range from classifying new species and mapping insect populations to investigating crop pests, tracking disease-carrying mosquitoes, or even helping police estimate time of death from insects found at crime scenes, a specialty known as forensic entomology. The word is formal and professional in register; everyday speakers are more likely to say 'insect expert' or 'bug scientist'. Because it looks and sounds almost identical to 'etymologist' — a scholar of word origins — it is frequently confused with that term, making it a favourite example of near-homophone mix-ups. For anyone interested in biodiversity, agriculture, medicine, or natural history, 'entomologist' is a precise and useful term for naming this distinct scientific profession.
nounA scientist who studies insects.
- A scientist who specializes in the study of insects, including their classification, biology, behaviour, and ecology.
"The entomologist spent weeks in the rainforest cataloguing beetle species new to science."
"As a forensic entomologist, she used the insect life on remains to estimate time of death."
"The museum's entomologist identified the specimen as a rare species of longhorn beetle."
Regular plural formation; used when referring to multiple scientists in the field.
"Entomologists from around the world gathered for the annual conference."
Swap a single letter and the insect expert becomes a word expert: an entomologist studies bugs, while an etymologist studies words — a confusion so common it has become a joke in both fields.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of entomologist
The word 'entomologist' derives from 'entomology', which comes from the Greek 'entomon' meaning 'insect' (literally 'notched' creature, from 'entomos', 'cut into', referring to insects' segmented bodies) combined with '-logia', meaning 'study of'. The Greek root 'entomon' itself derives from 'temnein', 'to cut'. The term entered English usage in the 18th century as the systematic scientific study of insects developed as a discipline distinct from general natural history. It shares its Greek root with related terms such as 'entomological' and 'entomophagy' (the eating of insects).
Related word forms
How entomologist is actually used
A formal, professional term; in casual conversation people more often say 'insect expert' or 'bug scientist'. It denotes a specialist within zoology and carries no negative connotation. Commonly qualified by subdiscipline (e.g., forensic, agricultural, medical entomologist).
Easily confused with entomologist
An etymologist studies the origin and history of words, while an entomologist studies insects — the two differ by only one letter but describe entirely different fields.