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tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways air cell , air sac , alveolus
blood vessel dilation caused by weakening of vessel wall aneurysm
dilation and enlargement of arterioles angiotelectasia
enlargement of the nose with dilation of follicles and redness and prominent vascularity of the skin; often associated with excessive consumption of alcohol brandy nose , copper nose , hammer nose , hypertrophic rosacea , potato nose , rhinophyma , rum-blossom , rum nose , toper's nose
rounded dilation or expansion in a canal or vessel or organ bulb
pain in the head caused by dilation of cerebral arteries or muscle contractions or a reaction to drugs cephalalgia , head ache , headache
drug that causes dilation dilator
abnormal redness of the skin resulting from dilation of blood vessels (as in sunburn or inflammation) erythema
reflex pupillary dilation as a muscle pulls the iris outward; occurs in response to a decrease in light or certain drugs mydriasis
dilation of superficial capillaries with a central red dot from which blood vessels radiate spider angioma , spider nevus , vascular spider
dilation of blood vessels (especially the arteries) vasodilation
drug that causes dilation of blood vessels vasodilative , vasodilator
localized dilation or protrusion on the wall of the left ventricle of the heart (occurring after a myocardial infarction) ventricular aneurysm
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