plane

• IPA^(key): /pleɪn/, [pʰl̥eɪn]

• Audio - 'a plane' (UK)

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• Audio (US)

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• Rhymes: -eɪn
• Homophone: plain

From Latin plānum (“flat surface”), a noun use of the neuter of plānus (“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.

plane (comparative planer, superlative planest)

1. Of a surface: flat or level.

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).
   • 1979 August, Graham Burtenshaw and Michael S. Welch, “O.V.S. Bulleid's SR loco-hauled coaches - 1”, in Railway World, page 396:

     Mirrors in the compartments have been canted out of the vertical plane to reduce reflections to the passengers when seated.

   1. (anatomy) An imaginary plane which divides the body into two portions.
3. A level of existence or development.

   astral plane

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.

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

• plain
• planar
• planate

• → Irish: plána

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

a rebate plane

plane (plural planes)

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

• rhykenologist

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

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

Clipping of aeroplane.

plane (plural planes)

1. An airplane; an aeroplane.
   • 2013 September 6, Tom Cheshire, “Solar-powered travel”, in The Guardian Weekly‎, volume 189, number 13, page 34:

     The plane is travelling impossibly slowly – 30km an hour – when it gently noses up and leaves the ground. With air beneath them, the rangy wings seem to gain strength; the fuselage that on the ground seemed flimsy becomes elegant, like a crane vaunting in flight. It seems not to fly, though, so much as float.

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.

Three PT boats planing, with their bows lifted out of the water.

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

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

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

plane (plural planes)

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

• Cape plane
• oriental plane

• Plane on Wikipedia.Wikipedia

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

• IPA^(key): /plan/

• Audio

  (file)

• Homophone: planes

plane

1. feminine singular of plan

plane

1. inflection of planer:
   1. first/third-person singular present indicative/subjunctive
   2. second-person singular imperative

• Népal, pénal

• Audio

  (file)

plane

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

From plānus (“intelligible, clear”).

• (Classical) IPA^(key): /ˈplaː.neː/, [ˈpɫ̪äːneː]
• (Ecclesiastical) IPA^(key): /ˈpla.ne/, [ˈpläːne]

plānē (comparative plānius, superlative plānissimē)

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

• plānus

• Hungarian: pláne

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

• “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 with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
• plane in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette
• Carl Meißner; Henry William Auden (1894) Latin Phrase-Book‎, London: Macmillan and Co.
  • to speak openly, straightforwardly: plane, aperte dicere
    
  • to banish all sad thoughts: omnem luctum plane abstergere
    

• plēnā, plēna

plane

1. definite singular of plan
2. plural of plan

plane

1. inflection of planar:
   1. first/third-person singular present subjunctive
   2. third-person singular imperative

plane

1. absolute definite natural masculine singular of plan.

• Nepal, alpen