(n)column, chromatography columna 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
(n)column, tower1, pillaranything 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”
(n)columna page or text that is vertically divided“the newspaper devoted several columns to the subject”, “the bookkeeper used pages that were divided into columns”