Back نظام عد عشريني Arabic Двадесетична бройна система Bulgarian Sistema vigesimal Catalan Dvacítková soustava Czech Vigesimalsystem German Εικοσαδικό σύστημα αρίθμησης Greek Dudekuma sistemo Esperanto Sistema vigesimal Spanish Zenbaki-sistema hogeitar Basque Vigesimaalijärjestelmä Finnish
| Part of a series on |
| Numeral systems |
|---|
| List of numeral systems |
A vigesimal (/vɪˈdʒɛsɪməl/ vij-ESS-im-əl) or base-20 (base-score) numeral system is based on twenty (in the same way in which the decimal numeral system is based on ten). Vigesimal is derived from the Latin adjective vicesimus, meaning 'twentieth'.