VSD may refer to: * .vsd, a file extension for Microsoft Visio diagrams * ''VSD'' (French magazine) (''Vendredi Samedi Dimanche''; i.e. "Friday Saturday Sunday"), a French weekly news magazine *

Vaccine Safety Datalink The Vaccine Safety Datalink Project (VSD) was established in 1990 by the United States Centers for Disease Control and Prevention (CDC) to study the adverse effects of vaccines. Four large health maintenance organizations, including Kaiser Perm ...

, a Centers for Disease Control database containing vaccination and health records of over 7 million Americans * Variable speed drive, or

adjustable-speed drive A motor drive is a physical system that includes a motor. An adjustable speed motor drive is a system that includes a motor that has multiple operating speeds. A variable speed motor drive is a system that includes a motor that is continuously v ...

, is a specific type of a variable-frequency drive * Visible-surface determination, also known as

hidden-surface determination In 3D computer graphics, hidden-surface determination (also known as shown-surface determination, hidden-surface removal (HSR), occlusion culling (OC) or visible-surface determination (VSD)) is the process of identifying what Computer representat ...

Video Single Disc Video Single Disc (VSD) is a disc-based format that carried the same analog video information as a LaserDisc, but on a 12-centimetre (4.75 inch) diameter CD-sized disc. It was spearheaded by Sony and was released in Japan in 1990. It was a new v ...

, a video disc format based on laserdisc that only was popular in Japan and the rest of Asia * Voluntary Service Detachment, an Australian civil organization during World War II *

State Security Department of Lithuania The State Security Department or VSD () is a Lithuanian intelligence agency which collects information on threats to national security and works to eliminate those threats. The VSD also conducts counterintelligence, protects state secrets and cl ...

, a Lithuanian intelligence agency *

Ventilation shutdown Ventilation shutdown (VSD) is a means to kill livestock by suffocation and heat stroke in which airways to the building in which the livestock are kept are cut off. It is used for mass killing — usually to prevent the spread of diseases such as a ...

, a means of killing livestock

Medicine

Ventricular septal defect A ventricular septal defect (VSD) is a defect in the ventricular septum, the wall dividing the left and right ventricles of the heart. It's a common heart problem present at birth ( congenital heart defect). The extent of the opening may vary ...

, a defect in the ventricular septum of the heart * Virtually safe dose, a concept in regulatory toxicology, applied to carcinogens with no threshold of effects

Places

* Vallivue School District, a school district in Idaho, United States * Vancouver Public Schools, a school district in Vancouver, Washington, United States * Vancouver School District, a school district in Vancouver, British Columbia, Canada * Vicksburg-Warren School District, a school district based in Vicksburg, Mississippi, United States {{disambiguation