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columnal

adjective
co·​lum·​nal | \kəˈləmnəl\

Definition of columnal 

(Entry 1 of 2)

: columnar

columnal

noun
\"\
plural -s

Definition of columnal (Entry 2 of 2)

: a columnar part or structure specifically : one of the vertical segments that make up the stem of a crinoid

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History and Etymology for columnal

Adjective

column + -al

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