a part that sticks out from the general mass of something the bizarrely shaped protrusions of a coral reef Synonyms bunch, convexity, jut, overhang, projection, bulge, protuberance, swellRelated Words dome; blob, bump, dilatation, gibbosity, hump, knob, knot, knurl, lump, nub, obtrusion, puff, snag, swelling; block, piece, portion, section; ...
For medicine, see etiology (medicine) . Etiology (/iËtiËÉlÉdÊi/ ; alternatively aetiology or aetiology) Ã¦tiology is the study of, causation or. Origination the word is derived from The greek, Î±á¼°ÏÎ¹Î¿Î»Î¿Î³Î¯Î±, aitiologia giving a reason (for, Î±á¼°ÏÎ¯Î±, aitia; cause -and, -Î»Î¿Î³Î¯Î±). logia
If the disease is not treated, however, it may progress to the stage where it causes subjective symptoms and abnormal physical findings. Therefore, the distinction be-tween asymptomatic and symptomatic disease is one of degree, depending primarily on the extent of the disease. The term etiology means cause. A disease of unknown etiology is one for which the cause is not yet known. Unfortunately, many diseases fall into this category. If the cause of a disease is known, the agent responsible is called the etiologic agent. The term pathogenesis refers to the manner by which a disease develops, and a pathogen is any microorganism, such as a bacterium or virus, that can cause disease. Classifications of Disease Diseases tend to fall into several large categories, although the diseases in a specific