Classical order Classical order An order in architecture is a certain assemblage of parts subject to uniform established proportions, regulated by the office that each part has to perform. Coming down to the present from Ancient Greek and Ancient Roman civilization, the architectural orders are the styles of classical architecture, each distinguished by its proportions and characteristic profiles and details, and most readily recognizable by the type of column employed. The three orders of architecture—the Doric, Ionic, and Corinthian—originated in Greece. To these the Romans added, in practice if not in name, the Tuscan, which they made simpler than Doric, and the
Doric Greek (shortened to "-s-" in Attic). Initial "w" (ϝ) is preserved in earlier Doric (lost in Attic). Literary texts in Doric and inscriptions from the Hellenistic age have no digamma. For information on the peculiarities of Doric accentuation, see Ancient Greek accent#Dialect variation Numeral "tetores" ~ Attic "tettares", Ionic "tesseres" "four". Ordinal "prātos" ~ Attic–Ionic "prōtos" "first". Demonstrative pronoun "tēnos" "this" ~ Attic–Ionic "(e)keinos" "t" for "h" (from Proto-Indo-European "s") in article and demonstrative pronoun. Third person plural, athematic or root aorist "-n" ~ Attic "-san". First person plural active "-mes" ~ Attic–Ionic "-men". Future "-se-ō" ~ Attic "-s-ō". Modal particle