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 s s /ˈɛs/

noun

  1. 1/60 of a minute; the basic unit of time adopted under the Système International d'Unités  ( s , sec , second )
    1/60 of a minute; the basic unit of time adopted under the Système International d'Unités
     The Olympic sprinter set a new world record by finishing the 100-meter dash in 958 seconds
    The Olympic sprinter set a new world record by finishing the 100-meter dash in 958 seconds

 S

  1. (thermodynamics) a thermodynamic quantity representing the amount of energy in a system that is no longer available for doing mechanical work  ( entropy , randomness , S )
    (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
    entropy increases as matter and energy in the universe degrade to an ultimate state of inert uniformity
  2. The 19th letter of the Roman alphabet  ( S )
    the 19th letter of the Roman alphabet
  3. A unit of conductance equal to the reciprocal of an ohm  ( mho , reciprocal ohm , S , siemens )
    a unit of conductance equal to the reciprocal of an ohm
  4. The cardinal compass point that is at 180 degrees  ( due south , S , southward , south )
    the cardinal compass point that is at 180 degrees
     They traveled south seeking warmer climates.
    They traveled south seeking warmer climates.
  5. 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)  ( atomic number 16 , S , sulphur [Canadian, British] , sulfur [ N. American] )
    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)
     The geothermal area smelled strongly of sulphur, a mineral that gives off a rotten egg odor
    The geothermal area smelled strongly of sulphur, a mineral that gives off a rotten egg odor