n. [ See Monotonous, Monotony. ] 1. (Mus.) A single unvaried tone or sound. [ 1913 Webster ]

2. (Rhet.) The utterance of successive syllables, words, or sentences, on one unvaried key or line of pitch. [ 1913 Webster ]

{ } a. 1. Of, pertaining to, or uttered in, a monotone; monotonous. “Monotonical declamation.” Chesterfield. [ 1913 Webster ]

2. (Math.) Always increasing or always decreasing, as the value of the independent variable increases; -- of a function. [ PJC ]

n. One who talks in the same strain or on the same subject until weariness is produced. Richardson. [ 1913 Webster ]

a. [ Gr. &unr_;; mo`nos alone, single + &unr_; tone. See Tone. ] Uttered in one unvarying tone; continued with dull uniformity; characterized by monotony; without change or variety; wearisome. -- Mo*not"o*nous*ly, adv. -- Mo*not"o*nous*ness, n. [ 1913 Webster ]

n. [ Gr. &unr_;: cf. F. monotonie. See Monotonius. ] 1. A frequent recurrence of the same tone or sound, producing a dull uniformity; absence of variety, as in speaking or singing. [ 1913 Webster ]

2. Any irksome sameness, or want of variety. [ 1913 Webster ]

At sea, everything that breaks the monotony of the surrounding expanse attracts attention. W. Irving. [ 1913 Webster ]

adj. (Math. or logic) not monotonic; -- of relations between variables. Opposite of monotonic. [ WordNet 1.5 ]