# Definify.com

## Lin′e-ar

(lĭn′ē̍-ẽr)
,
[L.
linearis
,
linearius
, fr.
linea
line: cf. F.
linéaire
. See 3d
Line
.]
1.
Of or pertaining to a line; consisting of lines; in a straight direction; lineal.
2.
(Bot.)
Like a line; narrow; of the same breadth throughout, except at the extremities;
as, a
linear
leaf
.
Linear differential equation
(Math.)
,
an equation which is of the first degree, when the expression which is equated to zero is regarded as a function of the dependent variable and its differential coefficients.
Linear equation
(Math.)
,
an equation of the first degree between two variables; – so called because every such equation may be considered as representing a right line.
Linear measure
,
the measurement of length.
Linear numbers
(Math.)
,
such numbers as have relation to length only: such is a number which represents one side of a plane figure. If the plane figure is square, the linear figure is called a root.
Linear problem
(Geom.)
,
a problem which may be solved geometrically by the use of right lines alone.
Linear transformation
(Alg.)
,
a change of variables where each variable is replaced by a function of the first degree in the new variable.

## LIN'EAR

,
[L. linearis.]
1.
Pertaining to a line; consisting of lines; in a straight direction.
2.
In botany, like a line; slender; of the same breadth throughout, except at the extremities; as linear leaf.
Linear numbers, in mathematics, such as have relation to length only; such is a number which represents one side of a plane figure. If the plane figure is a square, the linear figure is called a root.
Linear problem, that which may be solved geometrically by the intersection of two right lines.

# Linear

## English

### Proper noun

Linear

1. (astronomy) A comet, cataloged as C/1999 S4, discovered on September 27, 1999, by the Lincoln Near-Earth Asteroid Research program in New Mexico. (See ) Sometimes spelled LINEAR.

# linear

## English

 polynomial degrees Previous: constant Next: quadratic

linear (comparative more linear, superlative most linear)

1. Having the form of a line; straight.
2. Of or relating to lines.
3. Made in a step-by-step, logical manner.
4. (botany, of leaves) Long and narrow, with nearly parallel sides.
5. (mathematics) Of or relating to a class of polynomial of the form .
6. (physics) A type of length measurement involving only one spatial dimension (as opposed to area or volume).

## Portuguese

linear m, f (plural lineares, comparable)

1. linear (having the form of a straight line)
2. (mathematics) linear (being a first-degree polynomial)
3. linear (made in a step-by-step, logical manner)

## Spanish

### Etymology 1

linear m, f (plural lineares)

1. (botany) linear

### Etymology 2

#### Verb

linear (first-person singular present lineo, first-person singular preterite lineé, past participle lineado)

1. to line
2. to outline, to mark out