ääkköstö

Etymology
.

Noun

 * 1)  A set of characters which includes the letters Å, å, Ä, ä, Ö and ö.
 * Minun tietokoneestani puuttuu ääkköstö.
 * My computer is missing the letters Å, Ä and Ö.
 * My computer is missing the Finnish alphabet.