a lowercase letter that has a part extending above other lowercase letters
(printing) the part of tall lowercase letters that extends above the other lowercase letters
ascender详细解释
as.cend.er n.（名词）Printing The part of the tall lowercase letters, such asb,d, and h, that extends above the other lowercase letters. 【印刷术】 高于x字母的小写字母（如b,d,h,k）：小写字母中高出其它字母的高出部分，如b,d, 和 h A letter with such a part.有着这样一个部分的小写字母
