That part of a lowercase letter (e.g., k, b, or d) that ascends above the x-height of the typeface. The ascender line is an imaginary horizontal line that marks the tops of most ascenders in a font. (Compare descender, extender.)
Any element of a lower case letter extending higher than the x-height. For example, the upper half of the vertical in the letters b or h. The opposite, letters extending below the x-height are referred to as descenders.
For Latin languages, the portion of a lowercase letter that extends above the main body (the midline, or x-height) of that letter. For example, the vertical line of a "b" that extends above the highest point of the circle in that letter. See "midline," "x-height." See also "baseline," "descender."
Any mechanical device that slides upward when put on a fixed rope but catches when weight is put on it, allowing a climber to use the rope to move upward or to haul gear. Used in aid climbing, mountaineering rescue and caving.
Mechanical device that may be attached to a rope and used to ascend the rope. Ascenders often are used by the second climber on very long and difficult climbs to follow the leader quickly; they also are used in rescues. Jumar is the brand name for one type of ascender; the word has come into common usage as a noun or a verb.