kashida

noun2

1. •
   A type of justification used in some cursive scripts, particularly (Perso)-Arabic, where characters are elongated like a string rather than separated by spaces.

   • Kashida is a typographic effect used with Arabic writing systems to elongate characters... — 2008
2. •
   A character representing this elongation.

   • Note that "stretching" in this case can mean addition of white space, addition of connecting glyphs, such as kashidas... — 1994