### Definition of Planar

Exact synonyms: Two-dimensional
Similar to: Coplanar, Flat, Placoid, Platelike, Flattened, Planate, Tabular
Antonyms: Cubic, Linear
Derivative terms: Plane, Two-dimensionality

### Definition of Planar

1. Adjective. Of or pertaining to a plane. ¹

3. Adjective. (graph theory of a graph) Able to be embedded in the plane with no edges intersecting. ¹

¹ Source: wiktionary.com

### Planar Pictures

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### Lexicographical Neighbors of Planar

 plakoglobinplakousplamodelplamodelsplanplan Aplan Bplan apochromatic objective lensplan of actionplan of attack plan onplan outplanaplanar (current term)planar graphplanar inductionplanariaplanarianplanariansplanarias planaridaplanarioidplanaritiesplanarityplanariumplanarizationplanarizeplanarized

### Literary usage of Planar

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

1. A Treatise on Universal Algebra: With Applications by Alfred North Whitehead (1898)
"(1) A planar element, or the product of three points, must be conceived as a ... Thus if abc be a planar element formed by the product of the three points ..."

2. Technical Digest edited by G. W. Day, D. L. Franzen, P. A. Williams (1999)
"planar waveguide devices have recently started playing a role in WDM, in particular for passive optical components required in multi-wavelength systems, ..."

3. Projective Geometry by Oswald Veblen, John Wesley Young (1910)
"In the latter case let the two lines of the planar net be lv 12 and suppose ... If the point of intersection P of l,l2 were not a point of the planar net, ..."

4. Projective Geometry by Oswald Veblen, John Wesley Young (1910)
"In the latter case let the two lines of the planar net be lv 12 and ... If the point of intersection P of IJ2 were not a point of the planar net, 12 Q FIG. ..."

5. A Treatise on the Analytic Geometry of Three Dimensions by George Salmon (1882)
"Cayley calls planar ... of planes whose envelope would therefore be called a multi'planar developable: now it ... of the first seven orders are all planar. ..."

6. The Classical Differential Geometry of Curves and Surfaces by Georges Valiron (1986)
"Minimal surfaces whose Tines of curvature are planar. Enneper surfaces. If we assume that a family of lines of curvature of any surface is composed of plane ..."

7. Bacteria in Relation to Plant Diseases by Erwin Frink Smith (1905)
"flat surfaces he will select a lens with no great penetration, but with a very clear field, sharp to the edges, ie, a planar or some similar lens. ..."

8. Gauge Fields and Cartan-Ehresmann Connections by Robert Hermann (1975)
"We now examine the simplest such situation, namely the transformation of the planar hydrogen atom into planar harmonic oscillator. 5. ..."

9. A Treatise on Universal Algebra: With Applications by Alfred North Whitehead (1898)
"(1) A planar element, or the product of three points, must be conceived as a ... Thus if abc be a planar element formed by the product of the three points ..."

10. Technical Digest edited by G. W. Day, D. L. Franzen, P. A. Williams (1999)
"planar waveguide devices have recently started playing a role in WDM, in particular for passive optical components required in multi-wavelength systems, ..."

11. Projective Geometry by Oswald Veblen, John Wesley Young (1910)
"In the latter case let the two lines of the planar net be lv 12 and suppose ... If the point of intersection P of l,l2 were not a point of the planar net, ..."

12. Projective Geometry by Oswald Veblen, John Wesley Young (1910)
"In the latter case let the two lines of the planar net be lv 12 and ... If the point of intersection P of IJ2 were not a point of the planar net, 12 Q FIG. ..."

13. A Treatise on the Analytic Geometry of Three Dimensions by George Salmon (1882)
"Cayley calls planar ... of planes whose envelope would therefore be called a multi'planar developable: now it ... of the first seven orders are all planar. ..."

14. The Classical Differential Geometry of Curves and Surfaces by Georges Valiron (1986)
"Minimal surfaces whose Tines of curvature are planar. Enneper surfaces. If we assume that a family of lines of curvature of any surface is composed of plane ..."

15. Bacteria in Relation to Plant Diseases by Erwin Frink Smith (1905)
"flat surfaces he will select a lens with no great penetration, but with a very clear field, sharp to the edges, ie, a planar or some similar lens. ..."

16. Gauge Fields and Cartan-Ehresmann Connections by Robert Hermann (1975)
"We now examine the simplest such situation, namely the transformation of the planar hydrogen atom into planar harmonic oscillator. 5. ..."