sexagesimal adjective & noun. [sɛksǝ'dʒɛsɪm(ǝ)l] L17.
[from Latin sexagesimus sixtieth + -AL¹.]
A. adjective. Proceeding by sixties; esp. designating or pertaining to a system of numerical notation or measurement using sixty as a base or based on division into sixty equal parts (as seconds and minutes). L17.
sexagesimal fraction a fraction whose denominator is 60 or a power of 60.
b. noun. In pl. (The system of) sexagesimal fractions. L17.

■ sexagesimally adverb into sixtieths L19.

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