Late 19th century; earliest use found in The Academy: a monthly record of literature, learning, science, and art. From rune + -iform, originally after French runiforme.
Definition of runiform in US English:
runiform
adjectiveˈruːnɪfɔːm
Having the form of a rune or runes.
Origin
Late 19th century; earliest use found in The Academy: a monthly record of literature, learning, science, and art. From rune + -iform, originally after French runiforme.