
A5 +format, first part is the first letter of the Norwegian alphabet with a number. Last part most likely fromItalianformato(“size, dimension (on paper)”), offormare(“to form, create”), fromLatinformāre(“to shape, form”), fromfōrma(“form, figure, shape, appearance”) with an unknown descent, perhaps from someEtruscan*morma, connected by some withAncient Greekμορφή(morphḗ,“shape, form, appearance”), possibly ofPre-Greek origin.
A5-format n (definite singularA5-formatet,indefinite pluralA5-formatorA5-formater,definite pluralA5-formataorA5-formatene)