Definitions

1. adjective

relating to or resembling a column, especially in being cylindrical or tapering

“The architect designed a columellar arch to support the weight of the building.”

2. noun

a column or pillar, especially one supporting a vaulted or domed roof

“The columellar structure was built to withstand strong winds and heavy snowfall.”

3. noun

the posterior part of the nasal septum

“The columellar cartilage is a key component in maintaining nasal respiration.”