An attic base is a peculiar form of moulded base for a column or pilaster, described by Vitruvius, applied under the Roman Empire to the Ionic and Corinthian and Roman Doric orders, and imitated by the architects of the Renaissance.Found on http://www.probertencyclopaedia.com/browse/TA.HTM
A classical type common in the medieval period, with a concave moulding (scotia) between two convex ones (torus mouldings).
Found on http://www.crsbi.ac.uk/resources/glossary.html
the base of an Ionic column, which consists of two convex mouldings, the top one being smaller, separated by a concave moulding. See Classical Architecture Found on http://www.encyclo.co.uk/local/20935
Attic Base is the term given in architecture to the base of Roman Ionic order columns, consisting of an upper and lower torus, separated by a scotia (hollow concave molding) and fillets. It was the favorite of the Romans, and was also employed by them for columns of the Corinthian and Composite orders. The style can be seen in Byzantine architectu...Found on http://en.wikipedia.org/wiki/Attic_base
A common base used for columns in classical architecture, the Attic base is made up of an upper and lower torus, separated by a scotia with fillets. Found on http://www.doric-column.com/glossary_classical_architecture.html
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