SSD (disambiguation)

SSD may refer to:

Life science

• Signal-sensing domain, one of the modules of transcription factors
• Sterol-sensing domain, a protein domain involved in cholesterol biosynthesis
• Speech sound disorder
• Sexual size dimorphism
• Single-sided deafness, another name for unilateral hearing loss
• SSD, a brand name for the antibacterial cream silver sulfadiazine

Computing

• Solid-state drive, a type of data storage device which uses semiconductor flash memory rather than rotating media
• Seven-segment display, a display which uses 7 segments to display mostly numbers
• System sequence diagram, a type of UML software engineering diagram

Physics and chemistry

• Saturated-surface-dry, aggregate or porous solid condition

Mathematics

• Schulze method (Schwartz sequential dropping), a method used in decision theory
• Sum of squared differences, also called "squared deviations from the mean"

Other uses

• Sacramento County Sheriff's Department, in California
• Scalextric Sport Digital, a slot car racing system using digital decoders inside the cars
• SSD, the ISO 3166-1 alpha-3 code for South Sudan
• Strategic Sustainable Development, related to environmentally friendly resource use
• Super Star Destroyer, a type of capital starship in the Star Wars saga
• SSD (band), a rock band from Boston, USA, active 1981–1985
• Siroi language of Papua New Guinea (ISO code: ssd)
• Stansted Airport railway station (National Rail code: SSD)

See also

• Social Security Disability Insurance, a federal insurance program in the USA