Draw ellipses. Select the Ellipse tool. Click and hold the rectangle tool to see and choose the ellipse tool. For more information on selecting tools see Select a tool. Do one of the following: Drag diagonally until the ellipse is the desired size.
ab-. 1  Separable verb prefix, from. ab- + âfahren (âto leaveâ) â âabfahren (âto depart fromâ) 2  Separable verb prefix that indicates removal or quitting, off. 3  Separable verb prefix that indicates a downward movement, down.  Separable verb prefix that indicates from or of.
Ablation is a term used in medicine to describe the removal of tissue either by surgery or less invasive techniques. It is used to treat a variety of medical conditions ranging from serious to cosmetic. It differs from a resection which involves the partial or complete removal of an organ.