(mathematics, logic) such that the arguments or roles can be interchanged; "the arguments of the symmetric relation, `is a sister of,' are interchangeable"
(architeture) a tall cylindrical vertical upright and used to support a structure
a vertical cylindrical structure standing alone and not supporting anything (such as a monument)
a vertical glass tube used in column chromatography; a mixture is poured in the top and washed through a stationary substance where components of the mixture are adsorbed selectively to form colored bands
an article giving opinions or perspectives
a line of (usually military) units following one after another
a linear array of numbers one above another
anything tall and relatively thin that approximates the shape of a column or tower; "the test tube held a column of white powder"; "a tower of dust rose above the horizon"; "a thin pillar of smoke betrayed their campsite"