A
cedilla ( ; from
Spanish), also known as
cedilha (from Portuguese) or
cédille (from French), is a hook or tail ( ) added under certain letters as a
diacritical mark to modify their pronunciation. In
Catalan,
French, and
Portuguese, it is used only under the
c, and the entire letter is called respectively
c trencada (i.e. "broken C"), "c cédille", and "c cedilhado" (or "c cedilha", colloquially).