different between plane vs pseudotriangle

English

Pronunciation

• IPA^(key): /ple?n/, [p?l?e?n]
• Rhymes: -e?n
• Homophone: plain

Etymology 1

From Latin pl?num (“flat surface”), a noun use of the neuter of pl?nus (“plain”). The word was introduced in the 17th century to distinguish the geometrical senses from the other senses of plain. Doublet of llano, piano, and plain.

Adjective

plane (comparative planer, superlative planest)

1. Of a surface: flat or level.

Translations

Noun

plane (plural planes)

1. A level or flat surface.
2. (geometry) A flat surface extending infinitely in all directions (e.g. horizontal or vertical plane).
   1. (anatomy) An imaginary plane which divides the body into two portions.
3. A level of existence or development.

4. A roughly flat, thin, often moveable structure used to create lateral force by the flow of air or water over its surface, found on aircraft, submarines, etc. (Compare wing, airfoil, hydrofoil.)
5. (computing, Unicode) Any of 17 designated ranges of 2¹⁶ (65,536) sequential code points each.

Hyponyms

• (mathematics): real plane, complex plane
• (anatomy): coronal plane, frontal plane, sagittal plane, transverse plane
• (control surface): diving plane
• (Unicode): BMP, PUP, SIP, SMP, SPUA, SSP, supplementary plane, TIP

Derived terms

Related terms

• plain
• planar
• planate

Descendants

• ? Irish: plána

Translations

Etymology 2

From Middle English plane, plaine, from Anglo-Norman plaine, from Late Latin pl?na (“planing tool”).

Noun

plane (plural planes)

1. (countable) A tool for smoothing wood by removing thin layers from the surface.

Translations

See also

• rhykenologist

Verb

plane (third-person singular simple present planes, present participle planing, simple past and past participle planed)

1. (transitive) To smooth (wood) with a plane.

Translations

Etymology 3

Clipping of aeroplane.

Noun

plane (plural planes)

1. An airplane; an aeroplane.
2. (entomology) Any of various nymphalid butterflies, of various genera, having a slow gliding flight.

   Synonym: aeroplane

3. (entomology) The butterfly Bindahara phocides, family Lycaenidae, of Asia and Australasia.

Derived terms

Translations

Verb

plane (third-person singular simple present planes, present participle planing, simple past and past participle planed)

1. (nautical) To move in a way that lifts the bow of a boat out of the water.
2. To glide or soar.

Translations

Etymology 4

From Middle English plane, borrowed from Old French plane, from Latin platanus, from Ancient Greek ???????? (plátanos), from ?????? (platús, “wide, broad”).

Noun

plane (plural planes)

2. (countable) A deciduous tree of the genus Platanus.
3. (Northern UK) A sycamore.

Derived terms

• oriental plane

Translations

Further reading

• Plane on Wikipedia.Wikipedia

Anagrams

• Alpen, Nepal, Palen, palen, panel, penal, plena

French

Pronunciation

• IPA^(key): /plan/
• Homophone: planes

Adjective

plane

1. feminine singular of plan

Verb

plane

1. first-person singular present indicative of planer
2. third-person singular present indicative of planer
3. first-person singular present subjunctive of planer
4. third-person singular present subjunctive of planer
5. second-person singular imperative of planer

Anagrams

• Népal, pénal

German

Pronunciation

Verb

plane

1. inflection of planen:
   1. first-person singular present
   2. first/third-person singular subjunctive I
   3. singular imperative

Latin

Etymology

From pl?nus (“intelligible, clear”).

Pronunciation

• (Classical) IPA^(key): /?pla?.ne?/, [?p??ä?ne?]
• (Ecclesiastical) IPA^(key): /?pla.ne/, [?pl??n?]

Adverb

pl?n? (comparative pl?nius, superlative pl?nissim?)

1. plainly (to the senses or understanding), distinctly, intelligibly
2. (emphasising correctness) clearly, obviously
   1. (also used as an affirmative answer)
3. wholly, utterly, thoroughly, quite

Related terms

• pl?nus

Descendants

• Hungarian: pláne

References

• “pl?n?” on page 1526 of the Oxford Latin Dictionary (2nd ed., 2012)

Further reading

• plane in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• plane in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• plane in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
• plane in Gaffiot, Félix (1934) Dictionnaire illustré Latin-Français, Hachette
• Carl Meissner; Henry William Auden (1894) Latin Phrase-Book?^[1], London: Macmillan and Co.

Anagrams

• pl?n?, pl?na

Norwegian Nynorsk

Adjective

plane

1. definite singular of plan
2. plural of plan

Portuguese

Verb

plane

1. first-person singular (eu) present subjunctive of planar
2. third-person singular (ele and ela, also used with você and others) present subjunctive of planar
3. third-person singular (você) affirmative imperative of planar
4. third-person singular (você) negative imperative of planar

Swedish

Adjective

plane

1. absolute definite natural masculine form of plan.

Anagrams

• Nepal, alpen

English

Etymology

pseudo- +? triangle

Noun

pseudotriangle (plural pseudotriangles)

1. (mathematics) Any subset of a plane that lies between any three mutually tangent convex sets