Being, or having the salient properties of, a monotone function.
Having a single unvaried pitch.
To speak in a monotone.
A piece of writing in one strain throughout.
A single unvaried tone of speech or a sound.
Uttered in a monotone; monotonous.
said of a function that either never decreases or never increases as its independent variable increases.
of or using the Greek system of diacritics which discards the breathings and employs a single accent to indicate stress. It replaced polytonic system in 1982.