cross-section \ˈ ̷ ̷| ̷ ̷ ̷ ̷\transitive verb Etymology:cross section 1.: to represent in cross section : make a cross section of < cross-section a ship > 2.: to cut or divide into cross sections < a city cross-sectioned by canals > < cross-section a heart to show its chambers > 3.: to take at regular intervals levelings across (as a railroad or highway embankment) for the purpose of plotting transverse contours in the estimation of earthwork