Definitions for "Monotonic"
Keywords:  steadily, dac, strictly, dnl, lsb
Always increasing or always decreasing, as the value of the independent variable increases; -- of a function.
The property of a function that is always strictly increasing or strictly decreasing, but never both.
Changing in one direction only; thus either strictly rising or strictly falling, but not reversing direction.
Keywords:  hooting, unvarying, owl, faint, spoken
sounded or spoken in a tone unvarying in pitch; "the owl's faint monotonous hooting"
From RDF Semantics ( 2004-02-10) (adj., of a logic or inference system) Satisfying the condition that if S entails E then (S + T) entails E, i.e. adding information to some antecedents cannot invalidate a valid entailment.
Keywords:  uttered, pertaining
Of, pertaining to, or uttered in, a monotone; monotonous.
refers to the nature of the change of the tuning voltage. This is normally positive or negative, and does not change direction for a given slope.
(p. 47) Moves in only one direction.