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Dictionary definition for: S

1. (n) 1/60 of a minute; the basic unit of time adopted under the Systeme International d''Unites

2. (n) an abundant tasteless odorless multivalent nonmetallic element; best known in yellow crystals; occurs in many sulphide and sulphate minerals and even in native form (especially in volcanic regions)

3. (n) the cardinal compass point that is at 180 degrees

4. (n) a unit of conductance equal to the reciprocal of an ohm

5. (n) the 19th letter of the Roman alphabet

6. (n) (thermodynamics) a thermodynamic quantity representing the amount of energy in a system that is no longer available for doing mechanical work; "entropy increases as matter and energy in the universe degrade to an ultimate state of inert uniformity"

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