
1) Beach danger 2) Heat hyperpyrexia 3) Heatstroke 4) Insolation 5) Siriasis 6) Summer ailment 7) Summer woe 8) Thermic fever 9) UV OD, less briefly
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https://www.crosswordclues.com/clue/sunstroke

1) Insolation 2) Siriasis 3) Thirst
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https://www.crosswordclues.com/clue/sunstroke

• (n.) Any affection produced by the action of the sun on some part of the body; especially, a sudden prostration of the physical powers, with symptoms resembling those of apoplexy, occasioned by exposure to excessive heat, and often terminating fatally; coup de soleil.
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http://thinkexist.com/dictionary/meaning/sunstroke/

(from the article `heatstroke`) condition caused by continuous exposure to high temperature and humidity for several hours. The term sunstroke refers to the same disorder when ...
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http://www.britannica.com/eb/a-z/s/186

(sun´strōk″) a type of heat stroke involving disturbance of the body's heat-regulating mechanisms, caused by prolonged exposure to excessive heat from the sun, especially when there is little or no circulation of air. This must be distinguished from heat exhaustion, a less serious disorder; in sunstroke there...
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http://www.encyclo.co.uk/local/21001

Uncontrolled elevation of body temperature due to high environmental heat. Lack of sodium in the body is a predisposing cause
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Sun'stroke` noun (Medicine) Any affection produced by the action of the sun on some part of the body; especially, a sudden prostration of the physical powers, with symptoms resembling those of apoplexy, occasioned by exposure to excessive heat, and often terminating fatally; coup de soleil.
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http://www.encyclo.co.uk/webster/S/239

Type: Term Pronunciation: sŭn′strōk Definitions: 1. A form of heatstroke resulting from undue exposure to the sun's rays, probably caused by the action of actinic rays combined with high temperature; symptoms are those of heatstroke, but often without fever. Synonyms: heliosis, ictus solis, insolation2, siriasis, solar fever2 &nbs.....
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http://www.medilexicon.com/medicaldictionary.php?t=86674

Sunstroke (heat-stroke) is a disorder produced by exposure to the sun or very hot air.
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http://www.probertencyclopaedia.com/browse/ES.HTM

[
n] - sudden prostration due to exposure to the sun or excessive heat
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http://www.webdictionary.co.uk/definition.php?query=sunstroke
insolation noun sudden prostration due to exposure to the sun or excessive heat
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https://www.encyclo.co.uk/local/20974

a sudden and sometimes fatal affection due to exposure to the sun's rays or to excessive heat, marked by prostration with or without fever, convulsion, and coma. Also called
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https://www.infoplease.com/dictionary/sunstroke
No exact match found.