Relating to or shaped like a conch shell or the concha (a shell-shaped anatomical structure).
From Latin 'concha' meaning shell, combined with the adjectival suffix '-al'. The term emerged in anatomical terminology to describe structures resembling shells.
The concha in your ear is literally named after a seashell—your ear has a little shell-shaped part that helps funnel sound waves into your ear canal, which is why anatomists thought it looked like a conch.
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