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see hunchbackhunchback,
abnormal outward curvature of the spine in the thoracic region. It is also known as kyphosis and humpback, and in its severe form a noticeable hump is evident on the back.
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The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



a deformity of the spine that develops as a result of various diseases or injuries of the spine (most frequently in tubercular spondylitis). As a result of a pathological process, destruction of some vertebral bodies occurs, resulting in their deformation, which in its turn entails curvature of the spine in anterior-posterior and lateral directions. When humpback develops in children or young people, deformation of the spine is severe, inasmuch as further development of the skeleton does not proceed normally. A humpback in the form of a rounded protuberance in the back may form in rickets, as a result of changes in bone tissue. Rickety humpback is usually corrected with timely and correct treatment of rickets. The whole thorax is deformed simultaneously with the formation of a humpback—a so-called costal hump is formed, which also develops in lateral curvatures of the spine (scolioses). Prophylaxis of humpback formation in tubercular spondylitis consists of early and correct treatment of the tubercular process; in rickets preventive measures in administering antirachitic treatment, restraining the infant from sitting up too early, placing the infant on its abdomen from the age of 2½ months, massaging the back muscles, and exercising.

A special place is occupied by so-called cardiac hump—a protuberance of the thorax in the region of the heart, usually observed in young people who suffer from cardiac defects (chiefly aortic insufficiency).

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


1. another word for hunchback
2. a large whalebone whale, Megaptera novaeangliae, closely related and similar to the rorquals but with a humped back and long flippers: family Balaenopteridae
3. a Pacific salmon, Oncorhynchus gorbuscha, the male of which has a humped back and hooked jaws
4. Brit a road bridge having a sharp incline and decline and usually a narrow roadway
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
For this study, FMMP social media accounts were trawled for humpback whale sighting records over the period January 2017-March 2018.
About 50 feet from the shore, scientists spotted the lifeless humpback - about 26 feet long - lodged in thick shrubs and brush.
Humpback whales are usually found in Bahia on the north east coast of Brazil between August and November after which they go to Antarctica to feed.
Other kinds of calls, such as those linked to hunting Pacific herring, may be unique to humpbacks in the North Pacific.
Currently listed as 'endangered' by the IUCN Red List, the Arabian Sea humpback whale has a population estimated to be less than 100.
The Taiwanese humpback dolphin was listed as "endangered" in May 2018 by the National Oceanic and Atmospheric Administration, an American scientific agency, and fewer than 70 of the marine mammals still exist, according to a statement by local environmental groups.
'Luban', an Arabian Sea humpback whale tagged in the Gulf of Masirah last November, has made the first recorded transoceanic crossing across the Arabian Sea.
When Wanda the Whale's new baby brother arrives, she feels left out and miserable--until she cleverly hulas her way to humpback fame.
Occurrence of fin and humpback whales in the Scotia Sea and the protected marine area of the South Orkney Islands, Antarctica
Family Ziphiidae; killer whales, Orcinus orca; sperm whales, Physeter macrocephalus; and humpback whales, Megaptera novaeangliae (Manila et al., 1989; Mattila and Clapham, 1989; Mignucci-Giannoni, 1998; Roden and Mullin, 2000; Gandilhon, 2012).