[mahy-greyn or, British, mee-]
an extremely severe paroxysmal headache, usually confined to one side of the head and often associated with nausea; hemicrania.

1325–75; Middle English < Middle French < Late Latin hēmicrānia hemicrania; cf. megrim

migrainoid, adjective
migrainous, adjective
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World English Dictionary
migraine (ˈmiːɡreɪn, ˈmaɪ-)
a throbbing headache usually affecting only one side of the head and commonly accompanied by nausea and visual disturbances
[C18: (earlier form, C14 mygramemegrim1): from French, from Late Latin hēmicrānia pain in half of the head, from Greek hēmikrania, from hemi- + kranioncranium]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

late 14c., megrim, from O.Fr. migraigne (13c.), from vulgar pronunciation of L.L. hemicrania "pain in one side of the head, headache," from Gk. hemikrania, from hemi- "half" + kranion "skull" (see cranium). The M.E. form was re-spelled 1777 on Fr. model.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

migraine mi·graine (mī'grān')
A severe recurring headache, usually affecting only one side of the head, that is characterized by sharp pain and is often accompanied by nausea, vomiting, and visual disturbances. Also called hemicrania, megrim, sick headache.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
migraine   (mī'grān')  Pronunciation Key 
A severe recurring headache, usually affecting only one side of the head, that is characterized by sharp, throbbing pain and is often accompanied by nausea, vomiting, sensitivity to light, and visual disturbances. Vasodilation in the brain causes inflammation that results in pain, but the exact cause of migraine is unknown.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Computing Dictionary

MIGRAINES definition

A graphical user interface for evaluating and interacting with the Aspirin neural network simulation.
Utilities exist for moving quickly from an Aspirin description of a network directly to an executable program for simulating and evaluating that network. MIGRAINES has been kept separate from Aspirin so that its limitations do not restrict the performance of Aspirin. However, in practice, they are used together. This combination allows for simple specification and creation of efficient neural network systems that can be graphically analysed and tested.
[Aspirin/MIGRAINES Neural Network Software User's Manual, Release v6.0 MP-91W00050, Copyright 1992 by Russel Leighton and the MITRE Corporation].

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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Example sentences
She suffered recurring migraines and had difficulty sleeping.
Much better, she's had some migraines but she is doing well.
Standard screens are linked to chronic headaches, migraines, and deteriorating
The way the screens work cause severe eyestrain, and can even contribute to
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