NYMPHOMANIA
Nym`pho*ma"ni*a, n. Etym: [Gr. (Med.)
Defn: Morbid and uncontrollable sexual desire in women, constituting a true disease.
NYMPHOMANY
Nym"pho*ma`ny, n. Etym: [Cf. F. nymphomanie.] (Med.)
Defn: Same as Nymphomania.
NYMPHOTOMY
Nym*phot"o*my, n. Etym: [Nympha + Gr. (Med.)
Defn: Excision of the nymphæ.
NYS
Nys.
Defn: Is not. See Nis. Chaucer. Spenser.
NYSTAGMUS
Nys*tag"mus, n. Etym: [NL., fr. Gr. (Med.)
Defn: A rapid involuntary oscillation of the eyeballs.