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vigesimal

[vahy-jes-uh-muh l] /vaɪˈdʒɛs ə məl/
adjective
1.
of, relating to, or based on twenty.
2.
3.
proceeding by twenties.
Origin of vigesimal
1650-1660
1650-60; < Latin vīgēsim(us), variant (with g of vīgintī twenty) of vīcēsimus, vīcēnsimus twentieth + -al1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Examples from the Web for vigesimal
Historical Examples
  • As the latter is due to finger-reckoning, so the use of the fingers and the toes produced a vigesimal scale.

  • It counted by units and scores; in other words, it was a vigesimal system.

  • Among the almost countless dialects of Africa we find a comparatively small number of vigesimal number systems.

    The Number Concept Levi Leonard Conant
  • The last of these scales is an unusual combination of decimal and vigesimal.

    The Number Concept Levi Leonard Conant
  • If use is made of the toes in addition to the fingers, the outcome must inevitably be a vigesimal system.

    The Number Concept Levi Leonard Conant
  • Any number system which passes the limit 10 is reasonably sure to have either a quinary, a decimal, or a vigesimal structure.

    The Number Concept Levi Leonard Conant
  • This long cycle was an application of the vigesimal system to their reckoning of time.

  • This leads the quinary into the vigesimal scale, and produces the combination so often found in certain parts of the world.

    The Number Concept Levi Leonard Conant
  • This completes the scanty list of African vigesimal number systems that a patient and somewhat extended search has yielded.

    The Number Concept Levi Leonard Conant
  • To the statement just made respecting the origin of vigesimal counting, exception may, of course, be taken.

    The Number Concept Levi Leonard Conant
British Dictionary definitions for vigesimal

vigesimal

/vaɪˈdʒɛsɪməl/
adjective
1.
relating to or based on the number 20
2.
taking place or proceeding in intervals of 20
3.
twentieth
Word Origin
C17: from Latin vīgēsimus, variant (influenced by vīgintī twenty) of vīcēsimus twentieth
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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