SAD

From Free net encyclopedia

The word Sad refers to an emotional condition, the antonym of "happy". Sadness is often associated with depression, suffering or grief.

SAD is a three letter acronym for multiple medical and psychological disorders:

• Schizoaffective disorder
• Seasonal Affective Disorder
• Sexual Arousal Disorder
• Social Anxiety Disorder.

Other acronyms:

• in software development, a Software Architecture Document
• in business computing and information science, Systems (or System) Analysis and Design
• an Indian political party, the Shiromani Akali Dal
• the Central Intelligence Agency's special operations force, the Special Activities Division
• a technique to analize materials by diffraction, small angle diffraction
• the humourous holiday Singles Awareness Day
• source-to-axis distance - in medical physics and radiation oncology, the distance from the radiation source of the point along the beam axis of a radiation therapy machine which designates the axis of rotation of the gantry of said machine.

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