linear
lin.ear \'lin-e--*r\ \.lin-e--'ar-*t-e-\ \'lin-e--*r-le-\ aj 1a1: relating
to, consisting of, or resembling a line : STRAIGHT 1a2: involving a single
dimension 1b1: of the first degree in any number of variables {~ equation}
1b2: based on or involving linear equations 1c: characterized by an
emphasis on line {~ art} 2: elongated with nearly parallel sides {~ leaf}
3: involving or expressed by a linear equation; esp : having or be ing a
response or output that is directly proportional to the input -
lin.ear.i.ty n