Relating to or shaped like a columella; having the characteristics of a small column-like structure.
From 'columella' + Latin suffix '-ar' meaning 'of or relating to.' Standard adjectival form for describing things that pertain to columella structures.
The suffix '-ar' is so productive that nearly any noun can become an adjective—cellular, vascular, columellar—which is why scientific language can sound like it's from another planet to regular people!
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