Body Space or Junction
ethmoid sinus Audio
eth·moid si·nus [ eth-moid sahy-nuhs ]
Subclass of:
Nasal sinus
Definitions related to ethmoid sinus:
  • A sinus of the meatuses of the nasal cavity.
    NCI
    U.S. National Cancer Institute, 2021
  • A type of paranasal sinus (a hollow space in the bones around the nose). Ethmoid sinuses are found in the spongy ethmoid bone in the upper part of the nose between the eyes. They are lined with cells that make mucus to keep the nose from drying out.
    NCI Dictionary of Cancer Terms
    U.S. National Cancer Institute, 2021
  • The numerous (6-12) small thin-walled spaces or air cells in the ETHMOID BONE located between the eyes. These air cells form an ethmoidal labyrinth.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
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