Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym SISTER is...

SISTER is

Social Information System To Enhance Resources
Sassy Intelligent Smart Talented Elegant Raunchy

More Meanings For SISTER:

Soroptimists In Science Technology Engineering And Research
Social Information System To Enhance Resources
Sassy Intelligent Smart Talented Elegant Raunchy
Sisters In Scripture Teaching Encouraging Relationships

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