- Anatomy. the part of the trunk in humans and higher vertebrates between the neck and the abdomen, containing the cavity, enclosed by the ribs, sternum, and certain vertebrae, in which the heart, lungs, etc., are situated; chest.
- Zoology. a corresponding part in other animals.
- (in insects) the portion of the body between the head and the abdomen.
Origin of thorax
1350–1400; Middle English < Latin thōrāx < Greek thṓrāx breastplate, part of body which this covers
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for thorax
"There were wounds to the head, and to the thorax," said Dr. Pereira.Brazil's School Shooting: What Happened Inside
April 9, 2011
Disjunct: with head, thorax and abdomen separated by constrictions.
Endothorax: the internal framework or processes of the thorax.
Pleural pieces: the lateral sclerites of the thorax; see pleura.
Proeminent: said of the head when it is horizontal and does not form an angle with the thorax.
There is no sign of a future division into thorax and abdomen.
- the part of the human body enclosed by the ribs
- the corresponding part in other vertebrates
- the part of an insect's body between the head and abdomen, which bears the wings and legs
C16: via Latin from Greek thōrax breastplate, chest
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 thorax
"chest," c.1400, from Latin thorax, from Greek thorax (genitive thorakos) "breastplate, chest," of unknown origin.
Online Etymology Dictionary, © 2010 Douglas Harper
- The part of the human body between the neck and the diaphragm, partially encased by the ribs and containing the heart and lungs; the chest.
- A part in other vertebrates that corresponds to the human thorax.
- The second or middle region of the body of an arthropod, between the head and the abdomen, in insects bearing the legs and wings.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- The upper part of the trunk in vertebrate animals. The thorax includes the rib cage, which encloses the heart and lungs. In mammals, the thorax lies above the abdomen and below the neck.
- The middle division of the body of an insect, to which the wings and legs are attached. The thorax lies between the head and the abdomen.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The part of the body between the neck and diaphragm; the chest.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.