CIS is an abbreviation for the term "Collective Information Source".
A collective information source is an educational resource with information specific to a certain subject; it is usually held in a binder or folder.
A CIS can be created for general educational purposes, as a place to gather ones arguments during a disagreement, or out of
pettiness.
This abbreviation is not to be confused with any of the following:
Cisgender, The Center for Immigration Studies, The Commonwealth of Independent States, The Council of International Schools, The Center for Internet Security, Canadian Interuniversity Sport, The
Corpus Inscriptionum Semiticarum, Carcinoma
in situ, The Center for Comparative and International Studies, The Knabenchor collegium iuvenum
Stuttgart, a continuous ink system, a copper indium selenide solar cell, a contact image sensor, The Confederacy of Independent Systems, the towns in Italy and Poland, the mathematical function, the
Cis beetle,
cis regulatory elements, cis
isotope alkenes, cisalpine, and the C# music note.
She disagreed
with him so much that she created a CIS to
give to him.