(architecture) one of original three styles of Greek architecture distinguished by the type of column and entablature used or a style developed from the original three by the Romans WordNet 3.0 & Open English WordNet

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. Wikipedia

Architectonic orders in architecture Wikipedia Disambiguation

Styles of classical architecture, most readily recognizable by the type of column employed Wikidata

The disposition of a column and its component parts, and of the entablature resting upon it, in classical architecture; hence (since the column and entablature are the characteristic features of classical architecture) a style or manner of architectural design. Wiktionary