CISD may refer to:
*
Canadian Industrial Security Directorate
*Consolidated Independent School District, a term used in
Texas for school districts for merged districts
*
Colonel's Island Railroad
In the late 1960s, the State of Georgia started an improvement project for the port at Brunswick, Georgia. In this project, the Colonel's Island Railroad was created as a part of the Georgia Ports Authority. The CISD operated 33 miles of track ...
*
Configuration interaction singles & doubles, a variational quantum-chemical method for calculating electronic states
*
Critical Incident Stress Debriefing
Critical or Critically may refer to:
*Critical, or critical but stable, medical states
**Critical, or intensive care medicine
*Critical juncture, a discontinuous change studied in the social sciences.
*Critical Software, a company specializing in ...
{{disambig