13-letter words starting with ni
- nitroparaffin — any of a class of compounds derived from the methane series in which a hydrogen atom is replaced by a nitro group.
- nitroprusside — (inorganic chemistry) Any salt, of the hypothetical nitroprussic acid, that contains a pentacyanonitrosylferrate anion.
- nitroso group — the univalent group O=N–.
- nitrous ether — ethyl nitrite.
- nitrous oxide — a colorless, sweet-smelling, sweet-tasting, nonflammable, slightly water-soluble gas, N 2 O, that sometimes produces a feeling of exhilaration when inhaled: used chiefly as an anesthetic in dentistry and surgery, in the manufacture of chemicals, and as an aerosol.
- nits-and-lice — a yellow-flowered plant, Hypericum drummondii, of the central U.S.
- nitwittedness — The quality of being nitwitted.
- nizam al-mulk — title of Abu Ali Hasan Ibn Ali. ?1018–92, Persian statesman; vizier of Persia (1063–92) for the Seljuk sultans: assassinated
- nizhniy tagil — city in W Russia, in the EC Urals: pop. 429,000