Sexagenary \Sex*ag"e*na*ry\, a. [L. sexagenarius, fr. sexageni
sixty each, akin to sexaginta sixty, sex six: cf.
sexag['e]naire. See Six.]
Pertaining to, or designating, the number sixty; poceeding by
sixties; sixty years old.
Sexagenary arithmetic. See under Sexagesimal.
Sexagenary, or Sexagesimal, scale (Math.), a scale of
numbers in which the modulus is sixty. It is used in
treating the divisions of the circle.
Source: Webster's Revised Unabridged Dictionary (1913)
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Sexagesimal \Sex`a*ges"i*mal\, a. [Cf. F. sexag['e]simal.]
Pertaining to, or founded on, the number sixty.
Sexagesimal fractions or numbers (Arith. & Alg.), those
fractions whose denominators are some power of sixty; as,
1/60, 1/3600, 1/216000; -- called also astronomical
fractions, because formerly there were no others used in
astronomical calculations.
Sexagesimal, or Sexagenary, arithmetic, the method of
computing by the sexagenary scale, or by sixties.
Sexagesimal scale (Math.), the sexagenary scale.
Source: Webster's Revised Unabridged Dictionary (1913)
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