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gnomon Saltos de línea: gnomon
Pronunciación: /ˈnəʊmɒn/

Definición de gnomon en inglés:


1The projecting piece on a sundial that shows the time by the position of its shadow.
Oraciones de ejemplo
  • The problem is that the gardeners have been caught on the gnomon of their own sundial.
  • He also probably introduced the gnomon (a perpendicular sun-dial) into Greece and erected one in Sparta.
  • He placed a pole perfectly upright in the ground to make a simple sundial, or gnomon.
1.1 Astronomy A structure, especially a column, used in observing the sun’s meridian altitude.
Oraciones de ejemplo
  • The simplest astronomical instruments was the gnomon, nothing other than a stick which was erected and the length of its shadow measured.
  • He is also said to have constructed a armillary sphere, a water clock, and a bronze gnomon, a pointer whose shadow gives the time of mid-day.
  • Pergolas, open steel stairs, lattices and wooden blinds all act as shadow-casters and gnomons.
2 Geometry The part of a parallelogram left when a similar parallelogram has been taken from its corner.
Oraciones de ejemplo
  • Revolve the gnomon about its vertex and it can draw a circle; combine two gnomons and they form a square.
  • When the gnomon is turned up, it can measure height; when it is turned over, it can measure depth and when it lies horizontally it can measure distance.


Pronunciación: /nəʊˈmɒnɪk/
Oraciones de ejemplo
  • Loxodromes appear as straight lines on the Mercator projection, while orthodromes appear as straight lines on the gnomonic projection.
  • The videos were projected onto two screens built to replicate the gnomonic and ‘Robinson projections’ of representing the globe on a two dimensional surface.
  • A gnomonic image, meanwhile, tends to make the surface appear flat, and is used by navigators and aviators in determining the shortest distance between two points.


Mid 16th century: via Latin from Greek gnōmōn 'indicator, carpenter's square' (related to gignōskein 'know').

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