• noun:   the 19th letter of the Roman alphabet
• noun:   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)
• noun:   (thermodynamics) a thermodynamic quantity representing the amount of energy in a system that is no longer available for doing mechanical work

  Example: "Entropy increases as matter and energy in the universe degrade to an ultimate state of inert uniformity"

• noun:   the cardinal compass point that is at 180 degrees
• noun:   1/60 of a minute; the basic unit of time adopted under the Systeme International d'Unites
• noun:   a unit of conductance equal to the reciprocal of an ohm

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