vigesimaladj.
/vʌɪˈdʒɛsᵻm(ə)l/, /vᵻˈdʒɛsᵻm(ə)l/, U.S. /vaɪˈdʒɛsəml/ Of or pertaining to twenty; based on the number twenty.
ΘΚΠ
the world > relative properties > number > specific numbers > eleven to ninety-nine > [adjective] > twenty > counting in twenties
vigesimal1656
vicenarya1831
vigenary1837
vicesimal1902
1656 T. Blount Glossographia Vigesimal, pertaining to the twentieth in number.
1727 N. Bailey Universal Etymol. Eng. Dict. II
1827 F. A. Walter tr. Niebuhr Rem. Hist. I. 215 The ancient Azteks..calculated a great year of one hundred and four solar years. This they divided according to the Quinal and Vigesimal scale.
1871 C. Darwin Descent of Man I. v. 182 When we speak of three score and ten, we are counting by the vigesimal system.
1881 E. B. Tylor Anthropol. (1904) xiii. 312 The vigesimal counting (by twenties) which is the regular mode in many languages.
This entry has not yet been fully updated (first published 1917; most recently modified version published online December 2021).
<
adj.1656