Ethmoidal sinus



ethmoidal sinus n.
Any of the evaginations of the mucous membrane of the middle and superior meatus of the nasal cavity, subdivided into anterior, middle, and posterior sinuses.

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  • Ethmoid infundibulum

    ethmoid infundibulum n. A passage from the middle meatus of the nose communicating with the anterior ethmoidal cells and frontal sinus.

  • Ethmoiditis

    ethmoiditis eth·moid·i·tis (ěth’moi-dī’tĭs) n. Inflammation of the ethmoid sinuses.



  • Ethmoturbinal

    ethmoturbinal eth·mo·tur·bi·nal (ěth’mō-tûr’bə-nəl) adj. Relating to the superior and middle nasal conchae.

  • Ethnarch

    [eth-nahrk] /ˈɛθ nɑrk/ noun 1. the ruler of a people, tribe, or nation. /ˈɛθnɑːk/ noun 1. the ruler of a people or province, as in parts of the Roman and Byzantine Empires



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