planarityn.

Brit.

/pleɪˈnarᵻti/, U.S.

/pleɪˈnɛrədi/

Origin: Formed within English, by derivation. Etymons: planar adj., -ity suffix.

Etymology: < planar adj. + -ity suffix.

The quality or condition of being planar.

ΘΚΠ

the world > relative properties > number > geometry > surface > [noun] > plane > being planar or coplanar

planarity1850

coplanarity1901

the world > space > shape > flatness or levelness > [noun]

evenlinesseOE

evennesseOE

plainnessc1330

flatnessc1440

level1594

levelness1787

planity1803

planeness1858

planarity1956

1850 A. Cayley Coll. Math. Papers I. 505 It would be very desirable to have some means of ascertaining from the equation of a developable what the degree of its ‘planarity’ is.

1907 Trans. Amer. Math. Soc. 8 274 The condition of planarity is that the third of the dyadic vanish.

1956 Nature 7 Jan. 37/2 It shows..a significant departure from planarity, since the carbonyl oxygen is 0·5 A. out of the plane containing the remaining atoms of the amide group.

1963 W. Stubbe Graphic Arts in 20th Cent. 145 Around 1906 Kandinsky and Jawlensky approached the aims of fauvism when they laid stress on a planarity emphasized by means of colour.

1995 School Sci. Rev. June 64/2 Evidence for the symmetry and planarity of benzene came from Christopher Ingold's studies of the infra-red spectra of benzene and deuterated benzenes.

This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022).

单词	planarity
释义	planarityn. Brit. /pleɪˈnarᵻti/, U.S. /pleɪˈnɛrədi/ Origin: Formed within English, by derivation. Etymons: planar adj., -ity suffix. Etymology: < planar adj. + -ity suffix. The quality or condition of being planar. ΘΚΠ the world > relative properties > number > geometry > surface > [noun] > plane > being planar or coplanar planarity1850 coplanarity1901 the world > space > shape > flatness or levelness > [noun] evenlinesseOE evennesseOE plainnessc1330 flatnessc1440 level1594 levelness1787 planity1803 planeness1858 planarity1956 1850 A. Cayley Coll. Math. Papers I. 505 It would be very desirable to have some means of ascertaining from the equation of a developable what the degree of its ‘planarity’ is. 1907 Trans. Amer. Math. Soc. 8 274 The condition of planarity is that the third of the dyadic vanish. 1956 Nature 7 Jan. 37/2 It shows..a significant departure from planarity, since the carbonyl oxygen is 0·5 A. out of the plane containing the remaining atoms of the amide group. 1963 W. Stubbe Graphic Arts in 20th Cent. 145 Around 1906 Kandinsky and Jawlensky approached the aims of fauvism when they laid stress on a planarity emphasized by means of colour. 1995 School Sci. Rev. June 64/2 Evidence for the symmetry and planarity of benzene came from Christopher Ingold's studies of the infra-red spectra of benzene and deuterated benzenes. This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022). < n.1850
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