a cerebrovascular disorder in which the main cerebral arteries at the base of the brain are replaced by a fine network of vessels. It is caused by progressive stenosis of the large-caliber vessels and development of collateral network.n idiopathic disease pattern characterised by bilateral stenosis of the internal carotid arteries, accompanied by a network of abnormal collateral vessels that bypass the stenosis.
Ante means before, just as pre does. An antenuptial agreement is the same thing as a prenuptial agreement, that is, an agreement entered into by the husband-to-be and the wife-to-be prior to the marriage. Ante = before nuptial = marriage An antenuptial agreement is the same as a prenuptial agreement. It is a legal agreement made between a man and a woman before marriage, typically to discuss division of assets should they eventually divorce.
The term ex-ante (sometimes written ex ante or exante) is a phrase meaning before the event. Ex-ante is used most commonly in the commercial world, where results of a particular action, or series of actions, are forecast in advance (or intended). The opposite of ex-ante is ex-post (actual) (or ex post). Examples: 1  In the financial world, the ex-ante return is the expected return of an investment portfolio. 2  In the recruitment industry, ex-ante is often used when forecasting resource requirements on large future projects.