adjective
1. having the form of a column
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trees with columniform trunks
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columnar forms
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a columnlike tree trunk
• Syn: ↑columniform, ↑columnlike
• Similar to: ↑columned
• Derivationally related forms: ↑column
2. characterized by columns
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columnar construction
• Similar to: ↑columned
• Derivationally related forms: ↑column
Useful english dictionary. 2012.