SSD (disambiguation)

A solid-state drive is a type of data storage device which uses semiconductor flash memory rather than rotating media.

SSD may also refer to:

Science and technology

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

Biology and medicine

• 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, a type of hearing impairment
• Silver sulfadiazine, an antibacterial cream sold under a brand name SSD

Computing

• Seven-segment display, a display which uses seven segments to display mostly numbers
• Single-shot detection, a method of object detection
• Solid-state drive, a solid-state storage device that stores persistent data
• System sequence diagram, a type of UML software engineering diagram

Mathematics

• 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, US
• Sardar Sarovar Dam, Gujarat, India
• Scalextric Sport Digital, a slot car racing system using digital decoders inside the cars
• South Sudan (ISO 3166-1 alpha-3 code: SSD)
• 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, US, active 1981–1985
• Siroi language (ISO code: ssd), of Papua New Guinea
• Stansted Airport railway station (National Rail code: SSD)
• Social Security Disability Insurance (SSD or SSDI), a federal insurance program in the US
• State Security Department, the secret police agency of North Korea