Active may refer to:

Music

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Ships

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  • Active (ship), several commercial ships by that name
  • HMS Active, the name of various ships of the British Royal Navy
  • USCS Active, a US Coast Survey ship in commission from 1852 to 1861
  • USCGC Active, the name of various ships of the US Coast Guard
  • USRC Active, the name of various ships of the US Revenue Cutter Service
  • USS Active, the name of various ships of the US Navy

Computers and electronics

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Sciences

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  • Thermodynamic activity, measure of an effective concentration of a species in a mixture.
  • Activation, in chemistry the process whereby something is prepared for a subsequent reaction
  • Active (pharmacology), the fraction of a dose of unchanged drug that reaches systemic circulation

Other

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See also

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