clavÂ·iÂ·cle. A doubly curved long bone that forms part of the shoulder girdle. Its medial end articulates with the manubrium sterni at the sternoclavicular joint; its lateral end with the acromion of the scapula at the acromioclavicular joint. Synonym(s): clavicula [TA] , collar bone.
Origin of FICTIOUS. ficti on + -ous. This word doesn't usually appear in our free dictionary, but the definition from our premium Unabridged Dictionary is offered here on a limited basis.Note that some information is displayed differently in the Unabridged.efinition of FICTIOUS. : given to fiction: fictitious. ADVERTISEMENT.
Atrial fibrillation (AF or A-fib) is an abnormal heart rhythm characterized by rapid and irregular beating. Often it starts as brief periods of abnormal beating which become longer and possibly constant over time. Most episodes have no symptoms. Occasionally there may be heart palpitations, fainting, shortness of breath, or chest pain. The disease is associated with an increased risk of heart failure, dementia, and stroke. It is a type of supraventricular tachycardia. Hypertension and valvular heart disease are the most common alterable risk factors for AF.