Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of ectethmoid is as below...

Ectethmoid :: Ectethmoid (a.) External to the ethmoid; prefrontal.

Prefrontal :: Prefrontal (a.) Situated in front of the frontal bone, or the frontal region of the skull; ectethmoid, as a certain bone in the nasal capsule of many animals, and certain scales of reptiles and fishes..

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