GCS

GCS is a three letter acronym which has multiple meanings, including:

Cartography

• Geographic coordinate system, used in cartography to define a location on the Earth's surface.
• Galactic coordinate system is a celestial coordinate system which is centered on the Sun and is aligned with the apparent center of the Milky Way galaxy.

Computers; computer programming

• Game Creation System, an integrated development environment engineered for the design and development of user-derived videogames.
• group communication system, a software package that implements some form of group communication.
• Group Control System, an IBM VM Operating system component.

Medical and psychological uses

• Glasgow Coma Scale (also known as the Glasgow Coma Score) in medicine, used to quantify a patient's level of consciousness.
• Glucocorticosteroids are a class of steroid hormones characterised by an ability to bind with the glucocorticoid receptor (GR) and trigger similar effects.
• Greene Climacteric Scale is a questionnaire used by clinical researchers to evaluate the symptoms of menopause in patients.

Schools and colleges

• German Church School social project of the German speaking church congregation of Addis Ababa, Ethiopia.
• Glenelg Country School, a small private school located in Ellicott City, MD
• Government College of Science, Lahore, a college in Lahore, Pakistan
• Grace Church School, a K-8 school in lower Manhattan.
• Greenwood College School, a co-ed Private school located in Toronto, Ontario, Canada
• Guildford County School, a comprehensive school in Guildford, England

Other uses

• General Campaign Star: A medal awarded to Canadian Forces personnel who serve honorably in the presence of an armed enemy for a minimum of 30 days.
• Grand Central Station in midtown Manhattan (New York).
• Ground Control Station in telecommunications (see also: RQ-1 Predator).