[ en-tuh-mol-uh-jee ]
/ ˌɛn təˈmɒl ə dʒi /


the branch of zoology dealing with insects.

Nearby words

  1. entomofauna,
  2. entomol.,
  3. entomological,
  4. entomologist,
  5. entomologize,
  6. entomophagous,
  7. entomophilous,
  8. entomostracan,
  9. entophyte,
  10. entopic

Origin of entomology

First recorded in 1760–70; entomo- + -logy

Related forms
Can be confusedentomology etymology

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for entomologist

British Dictionary definitions for entomologist


/ (ˌɛntəˈmɒlədʒɪ) /


the branch of science concerned with the study of insects
Derived Formsentomological (ˌɛntəməˈlɒdʒɪkəl) or entomologic, adjectiveentomologically, adverbentomologist, noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for entomologist
Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for entomologist


[ ĕn′tə-mŏlə-jē ]


The study of insects.
Related formsen′to•mo•logic (-mə-lŏjĭk) null adj.en′to•molo•gist n.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for entomologist


[ ĕn′tə-mŏlə-jē ]

The scientific study of insects.

Word History

Scientists who study insects (there are close to a million that can be studied!) are called entomologists. Why are they not called “insectologists”? Well, in a way they are. The word insect comes from the Latin word insectum, meaning “cut up or divided into segments.” (The plural of insectum, namely insecta, is used by scientists as the name of the taxonomic class that insects belong to.) This Latin word was created in order to translate the Greek word for “insect,” which is entomon. This Greek word also literally means “cut up or divided into segments,” and it is the source of the word entomology. The Greeks had coined this term for insects because of the clear division of insect bodies into three segments, now called the head, thorax, and abdomen.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.