Relating to the ethmoid bone, a delicate, sieve-like bone in the middle of your skull that helps form your nasal cavity and separates your brain from your nose.
From ethmoid (Greek ethmos, sieve) + -al (adjective suffix). The bone is named 'ethmos' because it resembles a sieve with many tiny holes.
Your ethmoid bone is one of nature's clever designs—it's spongy and lightweight but strong, and it's riddled with air cells that help warm the air you breathe and make your voice resonate.
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