sexagenary
(a.)六十的
Sex·ag·e·na·ry a. Pertaining to, or designating, the number sixty; poceeding by sixties; sixty years old.
Sexagenary arithmetic. See under Sexagesimal.
Sexagenary scale, or Sexagesimal scale Math., a scale of numbers in which the modulus is sixty. It is used in treating the divisions of the circle.
Sex·ag·e·na·ry, n.
1. Something composed of sixty parts or divisions.
2. A sexagenarian.
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