Ethmoidal cell
ethmoidal cell n.
Any of the cavities in the ethmoid bone that are filled with air and that communicate with the nasal cavity.
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- Ethmoidal artery
ethmoidal artery n.
- Ethyl-mercaptan
noun, Chemistry. 1. . ethyl mercaptan A colorless organic liquid that has a very strong odor. It is added to odorless fuel, such as natural gas, and fuel systems as a warning agent in the event of leakage or spills. Also called ethanethiol. Chemical formula: C2H6S.
- Ethyl-nitrate
noun, Chemistry. 1. a colorless, sweet, water-insoluble, extremely explosive liquid, C 2 H 5 NO 3 , used chiefly in organic synthesis.
- Ethyl-nitrite
noun, Chemistry. 1. a colorless or yellowish, very volatile, highly aromatic, flammable liquid, C 2 H 2 NO 2 , used chiefly in the preparation of organic substances.
- Ethyl-nitrite-spirit
noun, Pharmacology. 1. a four percent solution of ethyl nitrite in alcohol, formerly used in medicine as a diaphoretic, diuretic, and antispasmodic.