Defn: Nicotinic.
NICOTIDINE
Ni*cot"i*dine ( or ), n. Etym: [Nicotine + pyridine.] (Chem.)
Defn: A complex, oily, nitrogenous base, isomeric with nicotine, and obtained by the reduction of certain derivatives of the pyridine group.
NICOTINE
Nic"o*tine ( or ), n. Etym: [F. nicotine. See Nicotian.] (Chem.)
Defn: An alkaloid which is the active principle of tobacco. It is a colorless, transparent, oily liquid, having an acrid odor, and an acrid burning taste. It is intensely poisonous. Ure.
NICOTINIC
Nic`o*tin"ic, a. (Chem.)
Defn: Pertaining to, or derived from, nicotine; nicotic; — used specifically to designate an acid related to pyridine, obtained by the oxidation of nicotine, and called nicotinic acid.
NICOTINISM
Nic"o*tin*ism, n. [Nicotine + -ism.] (Med.)
Defn: The morbid condition produced by the excessive use of tobacco.
NICTATE
Nic"tate, v. i. Etym: [L. nictare, nictatum, from nicere to beckon.]