Among canon of classical orders of classical architecture, the Tuscan order`s place is due to the influence of the Italian Sebastiano Serlio, who meticulously described the five orders including a `Tuscan order`, `the solidest and least ornate`, in his fourth book of Regole generali di architettura sopra le cinque maniere de gli edifici (1537...
See Doric Order.
the simplest of the orders of classical architecture. See order.[3 related articles]
One of the five orders of classical architecture. The Tuscan order was developed in Rome and does not appear in ancient Greece. Added to the classical orders by Renaissance architectural scholars who felt that the Tuscan order predates the Greek Doric and Ionic. Tuscan colums are unfluted with a simple base and unadorned capital and entablature. 
a version of the Doric order with unfluted column and plain frieze
The Tuscan order is the simplest of the five orders of classical architecture. It was unknown to the Greeks, and by many is considered only as a Roman variety of the Doric Order. The column is usually made six times the diameter of the lower part of the shaft in height. The entablature is varied both in character and proportion by different authors...
[n] - a Roman order that resembles the Doric order but without a fluted shaft
noun a Roman order that resembles the Doric order but without a fluted shaft