(redirected from Slifer the Sky Dragon)
STSDScience and Technology for Sustainable Development
STSDSecondary Traumatic Stress Disorder (psychology)
STSDSlifer the Sky Dragon (Yu-Gi-Oh! card)
STSDSalisbury Township School District (Allentown PA)
STSDSociety of Teachers of Speech and Drama (UK)
STSDSouthern Tioga School District (Blossburg, PA)
STSDSomerset Trust for Sustainable Development (UK)
STSDSemitone Standard Deviation
STSDSocio-Technical System Design (workflow process)