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[en-tuh-mol-uh-jee] /ˌɛn təˈmɒl ə dʒi/
the branch of zoology dealing with insects.
Origin of entomology
First recorded in 1760-70; entomo- + -logy
Related forms
[en-tuh-muh-loj-i-kuh l] /ˌɛn tə məˈlɒdʒ ɪ kəl/ (Show IPA),
entomologic, adjective
entomologically, adverb
entomologist, noun
nonentomologic, adjective
nonentomological, adjective
unentomological, adjective
Can be confused
entomology, etymology. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for entomologist
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British Dictionary definitions for entomologist


the branch of science concerned with the study of insects
Derived Forms
entomological (ˌɛntəməˈlɒdʒɪkəl), entomologic, adjective
entomologically, adverb
entomologist, 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
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Word Origin and History for entomologist

1771; see entomology + -ist.



1766, from French entomologie (1764), coined from Greek entomon "insect" + -logia "study of" (see -logy). Entomon is neuter of entomos "having a notch or cut (at the waist)," from en "in" (see en- (2)) + temnein "to cut" (see tome).

So called by Aristotle in reference to the segmented division of insect bodies. Compare insect. Related: Entomological. Hybrid insectology (1766, from French insectologie, 1744) is not much used.

I have given the name insectology to that part of natural history which has insects for its object; that of entomology ... would undoubtedly have been more suitable ... but its barbarous sound terryfy'd me. [Charles Bonnet's English translation of his "Contemplation de la nature," 1766]

Online Etymology Dictionary, © 2010 Douglas Harper
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entomologist in Medicine

entomology en·to·mol·o·gy (ěn'tə-mŏl'ə-jē)
The study of insects.

en'to·mo·log'ic (-mə-lŏj'ĭk) or en'to·mo·log'i·cal (-ĭ-kəl) adj.
en'to·mol'o·gist n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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entomologist in Science
The scientific study of insects.

Our Living Language  : 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 © 2002. Published by Houghton Mifflin. All rights reserved.
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