Definition of columnar in English:

columnar

Pronunciation /kəˈləmnər/

adjective

  • 1Resembling an upright pillar or column.

    ‘a phalanx of long, columnar crystals’
    • ‘the baobab tree trunk, massive and columnar and reaching towards the sky’
  • 2(of figures or other information) arranged vertically.

    ‘a columnar database’
    • ‘rows are converted to columnar format’