Typographic Ligature

Typographic Ligature

In writing and typography, a ligature occurs where two or more graphemes are joined as a single glyph. Ligatures usually replace consecutive characters sharing common components and are part of a more general class of glyphs called "contextual forms", where the specific shape of a letter depends on context such as surrounding letters or proximity to the end of a line.

Read more about Typographic Ligature:  History, Non-Latin Alphabets, Computer Typesetting