A variant or related form of the ethmoid bone, a delicate bone in the skull that forms part of the nasal cavity and contributes to the brain case.
From Greek 'ethmo-' meaning 'sieve' (from ethmós, a sieve) plus the suffix '-ose' used in anatomical terminology. The ethmoid bone has a sieve-like appearance due to its many small perforations.
The ethmoid bone looks like a tiny, intricate piece of Swiss cheese in your skull—its name literally means 'sieve-like' in Greek because of all those tiny holes that let smell receptors connect to your brain!
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