Medical conditions associated with nasal antihistamines and decongestants: 1  Allergic Rhinitis. 2  Cold Symptoms. 3  Nasal Congestion. 4  Rhinorrhea.
Princeton's WordNet(0.00 / 0 votes)Rate this definition: nickel, Ni, atomic number 28(noun) a hard malleable ductile silvery metallic element that is resistant to corrosion; used in alloys; occurs in pentlandite and smaltite and garnierite and millerite. ni. .ni is the Internet country code top-level domain for Nicaragua.
Nitrate is a polyatomic ion with the molecular formula NO 3 â and a molecular mass of 62.0049 g/mol.Nitrates also describe the organic functional group RONO 2.he anion is the conjugate base of nitric acid, consisting of one central nitrogen atom surrounded by three identically bonded oxygen atoms in a trigonal planar arrangement. The nitrate ion carries a formal charge of -1.