Sublinear

adjective
1.
of, consisting of, or using lines:
linear design.
2.
pertaining to or represented by lines:
linear dimensions.
3.
extended or arranged in a line:
a linear series.
4.
involving measurement in one dimension only; pertaining to length:
linear measure.
5.
of or relating to the characteristics of a work of art in which forms and rhythms are defined chiefly in terms of line.
6.
having the form of or resembling a line:
linear nebulae.
7.
Mathematics.

consisting of, involving, or describable by terms of the first degree.
having the same effect on a sum as on each of the summands:
a linear operation.

8.
Electronics. delivering an output that is directly proportional to the input:
a linear circuit; a linear amplifier.
9.
threadlike; narrow and elongated:
a linear leaf.
adjective
1.
of, in, along, or relating to a line
2.
of or relating to length
3.
resembling, represented by, or consisting of a line or lines
4.
having one dimension
5.
designating a style in the arts, esp painting, that obtains its effects through line rather than colour or light and in which the edges of forms and planes are sharply defined Compare painterly
6.
(maths) of or relating to the first degree: a linear equation
7.
narrow and having parallel edges: a linear leaf
8.
(electronics)

(of a circuit, etc) having an output that is directly proportional to input: linear amplifier
having components arranged in a line

linear lin·e·ar (lĭn’ē-ər)
adj.
Of, relating to, or resembling a line; straight.
linear
(lĭn’ē-ər)
Being or resembling a line.