Oral mucocele (also termed mucous retention cyst, mucous extravasation cyst, mucous cyst of the oral mucosa, and mucous retention and extravasation phenomena) is a clinical term that refers to two related phenomena:1  Mucus extravasation phenomenon.ral mucocele (also termed mucous retention cyst, mucous extravasation cyst, mucous cyst of the oral mucosa, and mucous retention and extravasation phenomena) is a clinical term that refers to two related phenomena:
A CFD, or Contract for Difference, is an agreement between two parties to exchange the difference between the opening price and closing price of a contract. CFD, or Contract for Difference, is an agreement between two parties to exchange the difference between the opening price and closing price of a contract.
A contract is an agreement between two parties that creates an obligation to perform (or not perform) a particular duty. A legally enforceable contract requires: 1  An Offer (Iâll mow your lawn this weekend if you pay me $30).2  An Acceptance (Youâve got a deal). contract is an agreement between two parties that creates an obligation to perform (or not perform) a particular duty. A legally enforceable contract requires: 1  An Offer (Iâll mow your lawn this weekend if you pay me $30). 2  An Acceptance (Youâve got a deal).