Numbers \Num"bers\, n. pl. of Number. The fourth book of the Pentateuch, containing the census of the Hebrews.

Source: Webster's Revised Unabridged Dictionary (1913)
 

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)
 

Commensurable \Com*men"su*ra*ble\, a. [L. commensurabilis; pref. com- + mensurable. See Commensurate, and cf. Commeasurable.]

Having a common measure; capable of being exactly measured by the same number, quantity, or measure. -- Com*men"su*ra*ble*ness, n.

Commensurable numbers or quantities (Math.), those that can be exactly expressed by some common unit; thus a foot and yard are commensurable, since both can be expressed in terms of an inch, one being 12 inches, the other 36 inches.

Numbers, or Quantities, commensurable in power, those whose squares are commensurable.

Source: Webster's Revised Unabridged Dictionary (1913)