SEXAGENARY

Etymology

Adjective

sexagenary (not comparable)

Of or related to the number sixty, particularly:

Containing sixty years.

(now, rare) synonym of sexagenarian: lasting or aged sixty years; sixty-year-old.

(math, astronomy, now, rare) synonym of sexagesimal: base-60.

Noun

sexagenary (plural sexagenaries)

(math, astronomy, now, rare) synonym of sexagesimal: base-60 numeration.

(now, rare) synonym of sexagenarian: a sixty-year-old.

Source: Wiktionary

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Sex*ag"e*na*ry, a. Etym: [L. sexagenarius, fr. sexageni sixty each, akin to sexaginta sixty, sex six: cf. sexagénaire. See Six.]

Definition: 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.

Sex*ag"e*na*ry, n.

1. Something composed of sixty parts or divisions.

2. A sexagenarian. Sir W. Scott.

Source: Webster’s Unabridged Dictionary 1913 Edition

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