co·lum·nar | \kə-ˈləm-nər \

Definition of columnar 

1 : of, relating to, resembling, or characterized by columns

2 : of, relating to, being, or composed of tall narrow somewhat cylindrical or prismatic epithelial cells

Examples of columnar in a Sentence

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The temperature at which magma cools to form these columnar joints is a question that has fascinated the world of geology for a very long time. David Grossman, Popular Mechanics, "Scientists Uncover the Secret of Strange, Geometrical Rock Formations," 12 Apr. 2018 Rounded barrel cactuses have low surface area, relative to their succulent storage capacity, while columnar cactuses or prickly pears expose only their thin edges at the tops or sides to direct sunlight. Natalie Angier, New York Times, "As Rains Ease in the West, Cactuses Shine Brighter Than Ever," 24 Apr. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'columnar.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of columnar

1728, in the meaning defined at sense 1

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The first known use of columnar was in 1728

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co·lum·nar | \kə-ˈləm-nər \

Medical Definition of columnar 

: of, relating to, being, or composed of tall narrow somewhat cylindrical or prismatic epithelial cells Barrett's esophagus is the condition in which a metaplastic columnar epithelium replaces the squamous epithelium that normally lines the distal esophagus.— Stuart Jon Spechler, Scientific American Medicine Bulletin, July 1998 When the development of the teeth is about to commence, the mouth cavity is lined by an epithelium which consists of a layer of low columnar cells.— James Henderson Scott et al., Introduction to Dental Anatomy, 1974

More from Merriam-Webster on columnar

Britannica English: Translation of columnar for Arabic Speakers

Comments on columnar

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to reject or criticize sharply

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