One of the mysteries of the English language finally explained.
Originally: obesity of the body; fatty infiltration of an organ; (now rare). In later use also (usually with distinguishing English or scientific Latin word): any of various disorders affecting adipose tissue, especially subcutaneous adipose tissue.
Mid 19th century. From German Adiposis and its etymon scientific Latin adiposis from classical Latin adip-, adeps + scientific Latin -osis.
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