Get CST full form and full name in details. Visit to know long meaning of CST acronym and abbreviations. It is one of the best place for finding expanded names. CST is a form of indirect tax levied by the Central Government of India on the sale of goods between different states and union territories. Learn about the origins, evolution, and impact of CST, and how it was subsumed by GST in 2017. The term CST,Central Sales Tax is a core concept under taxation. Get to know the definition of CST,Central Sales Tax, what it is, the advantages, and the latest trends here. CST Full Form in Medical The full form of CST in medical terminology is " Contraction Stress Test." A contraction stress test is a non-invasive procedure used to evaluate the condition of a fetus and the ability of the placenta to provide oxygen and nutrients to the fetus.