icosihenagon

Etymology
From.

Noun

 * 1)  A polygon with twenty-one edges and twenty-one angles.

Translations

 * Belarusian: дваццаціаднакутнік, дваццаціаднавугольнік
 * Bulgarian: двадесетоедноъгълник
 * Catalan:
 * Chinese:
 * Mandarin: 二十一邊形
 * Czech:
 * Dutch:
 * Esperanto: dudekunulatero
 * Finnish: 21-kulmio
 * French: henicosagone
 * Galician:
 * German:
 * Greek:
 * Hungarian: huszonegyszög
 * Italian: endeicosagono
 * Japanese: 二十一角形
 * Korean: 이십일각형
 * Macedonian:
 * Polish: 21-okąt
 * Portuguese:
 * Romanian:
 * Russian:
 * Serbo-Croatian:
 * Cyrillic:
 * Roman:
 * Slovene:
 * Spanish: icosihenágono
 * Swedish: ikosihenagon
 * Turkish:
 * Ukrainian: двадцятиоднокутник