DILATATION-ANEURYSM
\da͡ɪlɐtˈe͡ɪʃənˈanjuːɹˌɪzəm], \daɪlɐtˈeɪʃənˈanjuːɹˌɪzəm], \d_aɪ_l_ɐ_t_ˈeɪ_ʃ_ə_n_ˈa_n_j_uː_ɹ_ˌɪ_z_ə_m]\
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General enlargement of an artery; it may be active, due to an actual growth and dilatation of a vessel, usually of a group of smaller arteries (cirsoid a.); or passive, a simple stretching of the diseased wall of the aorta or one of its primary branches.
By Stedman, Thomas Lathrop
