### Definition of Linear

1. Adjective. Designating or involving an equation whose terms are of the first degree.

Category relationships: Math, Mathematics, Maths
Similar to: Bilinear
Antonyms: Nonlinear

2. Adjective. Of or in or along or relating to a line; involving a single dimension. "A linear measurement"
Exact synonyms: One-dimensional
Similar to: Collinear, Lineal, Linelike, Rectilineal, Rectilinear
Antonyms: Cubic, Planar

3. Adjective. Of a circuit or device having an output that is proportional to the input. "Linear amplifier"
Exact synonyms: Analog, Analogue
Category relationships: Electronics
Antonyms: Digital

4. Adjective. (of a leaf shape) long and narrow.
Exact synonyms: Elongate
Similar to: Simple, Unsubdivided

5. Adjective. Measured lengthwise. "Cost of lumber per running foot"
Exact synonyms: Running
Similar to: Lengthways, Lengthwise

### Definition of Linear

1. a. Of or pertaining to a line; consisting of lines; in a straight direction; lineal.

### Definition of Linear

1. Acronym. (astronomy) Lincoln Near-Earth Asteroid Research program. ¹

2. Proper noun. (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''. ¹

3. Adjective. Having the form of a line; straight. ¹

4. Adjective. Of or relating to lines. ¹

6. Adjective. (botany of leaves) Long and narrow, with nearly parallel sides. ¹

7. Adjective. (mathematics) Of or relating to a class of polynomial of the form $y = ax + b$. ¹

8. Adjective. (physics) A type of length measurement involving only one spatial dimension (qualifier as opposed to area or volume). ¹

¹ Source: wiktionary.com

### Medical Definition of Linear

1. Pertaining to or resembling a line. Origin: L. Linearis This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

### Linear Pictures

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### Lexicographical Neighbors of Linear

 linea trapezoidealineablelineae albicanteslineae atrophicaelineae transversa ossi sacrilineagelineageslineaginglineallinealities linealitylineallylineamentlineamentallineamentslinear (current term)linear absorption coefficientlinear accelerationlinear acceleratorlinear algebra linear algebraiclinear amputationlinear atrophylinear combinationlinear combinationslinear dependencelinear dichroismlinear energy transfer

### Literary usage of Linear

Below you will find example usage of this term as found in modern and/or classical literature:

1. A Treatise on Electricity and Magnetism by James Clerk Maxwell (1904)
"linear ELECTRIC CURRENTS. On Systems of linear Conductors. 273.] ANT conductor may be treated as a linear conductor if it is arranged so that the current ..."

2. The Theory of Functions of a Real Variable and the Theory of Fourier's Series by Ernest William Hobson (1907)
"THE REPRESENTATION OF A SQUARE ON A linear INTERVAL. 246. Let a point of a square whose side is unity be denoted by (x, y\ where 0 & x &\, 0 & y &l; ..."

3. Science by American Association for the Advancement of Science (1910)
"RD Carmichael: "linear difference equations and their analytic solutions. ... Arthur Ranum: "On the classification of systems of linear equations. ..."

4. Proceedings of the Cambridge Philosophical Society by Cambridge Philosophical Society (1902)
"A Theorem on Curves in a linear Complex. By JH GRACE, MA, Peterhouse. ... When all the tangents of a twisted curve belong to the same linear complex, ..."

5. Differential and Integral Calculus by Clyde Elton Love (1916)
"We have already (§ 203) defined the linear equation of the first order as an ... The homogeneous linear equation. A linear differential equation whose ..."

6. The Mathematical Theory of Electricity and Magnetism by James Hopwood Jeans (1908)
"STEADY CURRENTS IN linear CONDUCTORS. PHYSICAL PRINCIPLES. 338. IF two conductors charged with electricity to different potentials are connected by a ..."