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planar

[pley-ner] /ˈpleɪ nər/
adjective
1.
of or pertaining to a geometric plane.
2.
flat or level.
Origin
1840-1850
1840-50; < Late Latin plānāris flat, of a level surface, equivalent to Latin plān(um) plane1 + -āris -ar1
Related forms
planarity
[pluh-nair-i-tee] /pləˈnɛər ɪ ti/ (Show IPA),
noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for planar
  • Again, nobody relishes the prospect of making the radical move away from planar to vertical transistors.
  • Either way, the debris must have settled down into circular and planar orbits relatively quickly, through collisions.
  • The planar geography of the region also favours urban growth and agglomerations.
British Dictionary definitions for planar

planar

/ˈpleɪnə/
adjective
1.
of or relating to a plane
2.
lying in one plane; flat
Derived Forms
planarity (pleɪˈnærɪtɪ) noun
Word Origin
C19: from Late Latin plānāris on level ground, from Latin plānus flat
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for planar
adj.

1850, from Latin planaris "level, flat," from planum "plane" (see plane (n.1)).

Online Etymology Dictionary, © 2010 Douglas Harper
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