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.
NNI may refer to: Network-to-network interface, used to interconnect signalling networks in telecommunications; Net national income, a term in economics; National Nanotechnology Initiative, a U.S. government cross-agency coordinating program; Ngagyur Nyingma Institute, a monastic college for Buddhist studies & research