Sex*ag"e*na*ry (?), a. [L. sexagenarius, fr. sexageni sixty each, akin to sexaginta sixty, sex six: cf. sexagénaire. 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.

Sex*ag"e*na*ry, n. 1. Something composed of sixty parts or divisions.

2. A sexagenarian. Sir W. Scott.

Sex*ag"e*na*ry (?), a. [L. sexagenarius, fr. sexageni sixty each, akin to sexaginta sixty, sex six: cf. sexagénaire. 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.

Sex*ag"e*na*ry, n. 1. Something composed of sixty parts or divisions.

2. A sexagenarian. Sir W. Scott.