Noun
One who descends.
Source: Webster's dictionaryThe line-height is the area defined by the ascender and descender of each glyph in a font. Source: Internet
The lowercase Q's descender is usually typed without a swash due to the major style difference typically seen between the descenders of the lowercase G (a loop) and lowercase Q (vertical). Source: Internet
The lowercase Q (q) is usually seen as a lowercase O with a descender (i. Source: Internet
We also have a descender, which is where lowercase letters that are below the baseline align, and an ascender. Source: Internet