German edit

German numbers (edit)
 ←  11 12 13  → 
    Cardinal: zwölf
    Ordinal: zwölfte
    Sequence adverb: zwölftens
    Ordinal abbreviation: 12.
    Adverbial: zwölfmal
    Adverbial abbreviation: 12-mal
    Multiplier: zwölffach
    Multiplier abbreviation: 12-fach
    Fractional: Zwölftel
    Polygon: Zwölfeck
    Polygon abbreviation: 12-Eck
    Polygonal adjective: zwölfeckig
    Polygonal adjective abbreviation: 12-eckig

Adjective edit

12-eckig (strong nominative masculine singular 12-eckiger, not comparable)

  1. Alternative spelling of zwölfeckig