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STD may refer to:



Science and technology[edit]

  • Internet Standard (STD), a normative specification of a technology or methodology applicable to the Internet
  • Sexually transmitted infection (also sexually transmitted disease), infections that are commonly spread by sex, especially vaginal intercourse, anal sex and oral sex
  • STD Bus, a computer bus that was used primarily for industrial control systems
  • Subscriber trunk dialling, a telephone system allowing subscribers to dial trunk calls without operator assistance
  • std, the namespace defined by the C++ Standard Library


See also[edit]