projection

English

Etymology

From either the Middle French projection or its etymon, the Classical Latin prōiectiō (stem: prōiectiōn-), from prōiciō. Compare the Modern French projection, the German Projektion, and the Italian proiezione.

Pronunciation
  • IPA(key): /pɹəˈdʒɛkʃən/
  • Rhymes: -ɛkʃən

Noun

projection (countable and uncountable, plural projections)

  1. Something which projects, protrudes, juts out, sticks out, or stands out.
    The face of the cliff had many projections that were big enough for birds to nest on.
  2. The action of projecting or throwing or propelling something.
  3. The display of an image by devices such as movie projector, video projector, overhead projector or slide projector.
  4. A forecast or prognosis obtained by extrapolation
  5. (psychology) A belief or assumption that others have similar thoughts and experiences as oneself
  6. (photography) The image that a translucent object casts onto another object.
  7. (cartography) Any of several systems of intersecting lines that allow the curved surface of the earth to be represented on a flat surface. The set of mathematics used to calculate coordinate positions.
  8. (geometry) An image of an object on a surface of fewer dimensions.
  9. (linear algebra) An idempotent linear transformation which maps vectors from a vector space onto a subspace.
  10. (mathematics) A transformation which extracts a fragment of a mathematical object.
  11. (category theory) A morphism from a categorical product to one of its (two) components.

Synonyms

Derived terms
Terms derived from projection
  • graphical projection
  • Haworth projection
  • oblique projection
  • orthographic projection
  • parallel projection
  • perspective projection
  • projective
  • isometric projection
  • trimetric projection

Translations
The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Wiktionary:Entry layout#Translations.
Translations to be checked

Further reading

French

Pronunciation
  • Audio(file)

Noun

projection f (plural projections)

  1. projection
  2. screening (of a film)

Interlingua

Noun

projection (plural projectiones)

  1. projection
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