loculation. Definitions: 1. A loculate region in an organ or tissue, or a loculate structure formed between surfaces of organs, mucous or serous membranes, and so on. 2. The process that results in the formation of a loculus or loculi. The definition information for loculation is provided by Stedman's.
Competitive markets, sometimes referred to as perfectly competitive markets (or perfect competition), have three specific features. The first feature is that a competitive market consists of a large number of buyers and sellers that are small relative to the size of the overall market.
Fourth market. Refers to the practice of institutional investors trading large blocks of securities directly to avoid brokerage commissions. See: Instinet. Fourth Market. The over-the-counter market for the sale of listed securities between institutional investors. For example, if a mutual fund sells stock in Google to a hedge fund without going through an exchange, the transaction is said to occur on the fourth market.