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sed is a Unix utility for processing text.

Sed or SED may also refer to:

Biology and medicine

• Erythrocyte sedimentation rate (sed rate), a haematology test
• Sedirea (Sed.), a genus of orchids
• Selective eating disorder or avoidant/restrictive food intake disorder
• Spondyloepiphyseal dysplasia congenita, an inherited genetic bone disorder

Science and technology

• DEC SED (text editor), for some DEC operating systems
• sed, "stream editor", a simple command-line text editor in unix-like system
• Self-encrypting device, an encrypting hard drive
• Spectral energy distribution, of an astronomical source
• Stochastic electrodynamics, in quantum mechanics
• Surface-conduction electron-emitter display, a flat-panel display technology

Organisations and businesses

• Scottish Education Department
• SED Systems, a Canadian satellite communications provider
• Socialist Unity Party of Germany (German: Sozialistische Einheitspartei Deutschlands), East German communist party
• Swiss Seismological Service (German: Schweizerische Erdbebendienst)
• Tata Power SED, Tata Power Strategic Electronics Division

Other uses

• Survey of English Dialects
• Strategic Economic Dialogue
• Sed card, a "portfolio-on-a-card" used by models and actors
• Sed festival, in Ancient Egypt
• Shippers Export Declaration, a US form

See also

• All pages with titles beginning with Sed
• All pages with titles containing Sed
• All pages with titles containing SED
• Students for the Exploration and Development of Space (SEDS)

• Disambiguation pages