Ny [Contr. fr. ne I.] Not I; nor I. [Obs.] { Ny, Nye }, a. & adv. Nigh. [Obs.] Chaucer.

Nyctalopia
Nyc•ta•lo´pi•a, n. [L. nyctalopia, fr. nyctalops a nyctalops, Gr. . Gr. meant, a person affected either with day blindness or with night blindness, and in the former case was derived fr.,, night +,, the eye; in the latter, fr. + blind + .] (Med.) (a) A disease of the eye, in consequence of which the patient can see well in a faint light or at twilight, but is unable to see during the day or in a strong light; day blindness. (b) See Moonblink. Some writers (as Quain) use the word in the opposite sense, night blindness. See Hemeralopia.

Nyctalops
Nyc´ta•lops, n. [L., from Gr. .] One afflicted with nyctalopia.

Nycthemeron
Nyc•the´me•ron, n. [Gr. ;,, night + day.] The natural day and night, or space of twenty-four hours.

Nyentek
Ny•en´tek, n. (Zoöl.) A carnivorous mammal ( Helictis moscatus, or H. orientalis), native of Eastern Asia and the Indies. It has a dorsal white stripe, and another one across the shoulders. It has a strong musky odor. { Nyl´ghau, Nyl´gau }, n. [Hind. & Per. nilgaw, prop., a blue cow; Per. nil blue + gaw cow. See Lilac, and Cow the animal.] (Zoöl.) A large Asiatic antelope ( Boselaphus, or Portax, tragocamelus), found in Northern India. It has short horns, a black mane, and a bunch of long hair on the throat. The general color is grayish brown. [Written also neelghau, nilgau, and nylghaie.]

Nymph, n. [L. nympha nymph, bride, young woman, Gr. : cf. F. nymphe. Cf. Nuptial.]
1. (Class. Myth.) A goddess of the mountains, forests, meadows, or waters.
"Where were ye, nymphs, when the remorseless deep Closed o’er the head of your loved Lycidas ?" Milton.
2. Hence: A lovely young girl; a maiden; a damsel.
"Nymph, in thy orisons Be all my sins remembered." Shak.
3. (Zoöl.) The pupa of an insect; a chrysalis.
4. (Zoöl.) Any one of a subfamily ( Najades) of butterflies including the purples, the fritillaries, the peacock butterfly, etc.; — called also naiad.

Nympha
Nym´pha, n. ; pl. Nymphae (#). [L. See Nymph a goddess.]
1. (Zoöl.) Same as Nymph, 3.
2. pl. (Anat.) Two folds of mucous membrane, within the labia, at the opening of the vulva.

Nymphaea
Nym•phae´a, n. [L., the water lily, Gr. .] (Bot.) A genus of aquatic plants having showy flowers (white, blue, pink, or yellow, often fragrant), including the white water lily and the Egyptia lotus. Recent critics have endeavored to show that this genus should be called Castalia, and the name Nymphaea transferred to what is now known as Nuphar.

Nymphet
Nymph´et, n. A little or young nymph. [Poetic] "The nymphets sporting there." Drayton. { Nymph´ic, Nymph´ic•al } a. [Gr. bridal.] Of or pertaining to nymphs.

Nymphotomy
Nym•phot´o•my, n. [ Nympha + Gr. to cut.] (Med.) Excision of the nymphae.

Nystagmus
Nys•tag´mus, n. [NL., fr. Gr. drowsiness, fr. to nod in sleep, to slumber.] (Med.) A rapid involuntary oscillation of the eyeballs.