<P> The Ionic order forms one of the three classical orders of classical architecture , the other two canonic orders being the Doric and the Corinthian . There are two lesser orders : the Tuscan ( a plainer Doric ) , and the rich variant of Corinthian called the composite order , both added by 16th - century Italian architectural writers , based on Roman practice . Of the three canonic orders , the Ionic order has the narrowest columns . </P>
<P> The Ionic order forms one of the three classical orders of classical architecture , the other two canonic orders being the Doric and the Corinthian . There are two lesser orders : the Tuscan ( a plainer Doric ) , and the rich variant of Corinthian called the composite order , both added by 16th - century Italian architectural writers , based on Roman practice . Of the three canonic orders , the Ionic order has the narrowest columns . </P>
the doric lonic and corinthian styles are known as the
the doric lonic and corinthian styles are known as the
three classical orders of classical architecture
three classical orders of classical architecture