noun as·cend·er \ə-ˈsen-dər, ˈa-\

Definition of ascender

  1. 1 :  the part of a lowercase letter (such as b) that rises above the main body of the letter; also :  a letter that has such a part

  2. 2 :  a device used for climbing rope that slides freely in one direction and grips the rope when pulled in the opposite direction

Circa 1867

First Known Use of ascender

circa 1867

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