planenessn.

Brit.

/ˈpleɪnnəs/, U.S.

/ˈpleɪ(n)nəs/

Origin: Formed within English, by derivation. Etymons: plane adj., -ness suffix.

Etymology: < plane adj. + -ness suffix. Compare earlier plainness n. 1.

The quality or condition of being plane; flatness, levelness.

ΘΚΠ

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

evenlinesseOE

evennesseOE

plainnessc1330

flatnessc1440

level1594

levelness1787

planity1803

planeness1858

planarity1956

1858 Philos. Trans. 1857 (Royal Soc.) 147 626 He describes a practical method of testing the planeness of surfaces.

1896 Jrnl. Geol. (Chicago) 4 955 Overwash plains may sometimes depart from planeness by taking on some measure of undulation.

1935 C. J. Smith Intermediate Physics (ed. 2) v. xlviii. 815 It is a piece of cover glass, selected by optical trial for planeness, and silvered at the back.

1975 D. G. Fink Electronics Engineers' Handbk. ix. 26 Since the periphery of the grid is colder than the center, thermal stresses tend to cause buckling or departure from planeness.

1990 Measurem. Techniques 33 570 The surface retains its planeness within the boundaries of the radiation spot.

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

单词	planeness
释义	planenessn. Brit. /ˈpleɪnnəs/, U.S. /ˈpleɪ(n)nəs/ Origin: Formed within English, by derivation. Etymons: plane adj., -ness suffix. Etymology: < plane adj. + -ness suffix. Compare earlier plainness n. 1. The quality or condition of being plane; flatness, levelness. ΘΚΠ the world > space > shape > flatness or levelness > [noun] evenlinesseOE evennesseOE plainnessc1330 flatnessc1440 level1594 levelness1787 planity1803 planeness1858 planarity1956 1858 Philos. Trans. 1857 (Royal Soc.) 147 626 He describes a practical method of testing the planeness of surfaces. 1896 Jrnl. Geol. (Chicago) 4 955 Overwash plains may sometimes depart from planeness by taking on some measure of undulation. 1935 C. J. Smith Intermediate Physics (ed. 2) v. xlviii. 815 It is a piece of cover glass, selected by optical trial for planeness, and silvered at the back. 1975 D. G. Fink Electronics Engineers' Handbk. ix. 26 Since the periphery of the grid is colder than the center, thermal stresses tend to cause buckling or departure from planeness. 1990 Measurem. Techniques 33 570 The surface retains its planeness within the boundaries of the radiation spot. This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022). < n.1858
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