Definition of "vigesimal" in English

adjective

1. Occurring in intervals of twenty.

2. (arithmetic) To the base twenty.

noun

1. A twentieth part.

2. “vigesimal”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.

3. “vigesimal”, in OED Online ⁠, Oxford: Oxford University Press, launched 2000.

4. “vigesimal”, in The American Heritage Dictionary of the English Language, 5th edition, Boston, Mass.: Houghton Mifflin Harcourt, 2016, →ISBN.