Nictitating membrane(Anat.), a thin membrane, found in many animals at the inner angle, or beneath the lower lid, of the eye, and capable of being drawn across the eyeball; the third eyelid; the haw.

Nictitation
(Nic`ti*ta"tion) n. The act of winking.

Nidamental
(Nid`a*men"tal) a. [L. nidamentum materials for a nest, fr. nidus nest. See Nest.] (Zoöl.) Of, pertaining to, or baring, eggs or egg capsules; as, the nidament capsules of certain gastropods; nidamental glands. See Illust. of Dibranchiata.

Nidary
(Ni"da*ry) n. [L. nidus a nest.] A collection of nests. [R.] velyn.

Nide
(Nide) n. [L. nidus a nest: cf. F. nid.] A nestful; a brood; as, a nide of pheasants. [Obs.]

Nidering
(Ni"der*ing) a. [See Niding.] Infamous; dastardly. [Obs.] Sir W. Scott.

Nickname
(Nick"name`) n. [OE. ekename surname, hence, a nickname, an ekename being understood as a nekename, influenced also by E. nick, v. See Eke, and Name.] A name given in contempt, derision, or sportive familiarity; a familiar or an opprobrious appellation.

Nickname
(Nick"name`), v. t. [imp. & p. p. Nicknamed (#); p. pr. & vb. n. Nicknaming.] To give a nickname to; to call by a nickname.

You nickname virtue; vice you should have spoke.
Shak.

I altogether disclaim what has been nicknamed the doctrine of finality.
Macaulay.

Nicolaitan
(Ni`co*la"i*tan) n. [So called from Nicolas of Antioch, mentioned in Acts vi. 5.] (Eccl. Hist.) One of certain corrupt persons in the early church at Ephesus, who are censured in rev. ii. 6, 15.

Nicotian
(Ni*co"tian) n. [F. nicotiane; — so called from Nicot, who introduced it into France, a. d. 1560.] Tobacco. [R.] B. Jonson.

Nicotian
(Ni*co"tian), a. Pertaining to, or derived from, tobacco. [R.] Bp. Hall.

Nicotiana
(||Ni*co`ti*a"na) n. [NL. See Nicotian.] (Bot.) A genus of American and Asiatic solanaceous herbs, with viscid foliage and funnel-shaped blossoms. Several species yield tobacco. See Tobacco.

Nicotianine
(Ni*co"ti*a*nine) n. [F. nicotianine. See Nicotian.] (Chem.) A white waxy substance having a hot, bitter taste, extracted from tobacco leaves and called also tobacco camphor.

Nicotic
(Ni*cot"ic) a. (Chem.) Nicotinic.

Nicotidine
(Ni*cot"i*dine) n. [Nicotine + pyridine.] (Chem.) A complex, oily, nitrogenous base, isomeric with nicotine, and obtained by the reduction of certain derivatives of the pyridine group.

Nicotine
(Nic"o*tine) n. [F. nicotine. See Nicotian.] (Chem.) 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.) 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.

Nictate
(Nic"tate) v. i. [L. nictare, nictatum, from nicere to beckon.] To wink; to nictitate.

Nictation
(Nic*ta"tion) n. [L. nictatio cf. F. nictation.] the act of winking; nictitation.

Nictitate
(Nic"ti*tate) v. i. [See Nictate.] To wink; to nictate.


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