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.
Freebase(0.00 / 0 votes)Rate this definition: Omni. Omni was a science and science fiction magazine published in the US and the UK. It contained articles on science, parapsychology, and short works of science fiction and fantasy. It was published as a print version between October 1978 and 1995.