Gnomon Gno"mon, n. [L. gnomon, Gr. ? one that knows, the index of a sundial. See {Gnome}.] [1913 Webster] 1. (Dialing) The style or pin, which by its shadow, shows the hour of the day. It is usually set parallel to the earth's axis. [1913 Webster]

2. (Astron.) A style or column erected perpendicularly to the horizon, formerly used in astronomocal observations. Its principal use was to find the altitude of the sun by measuring the length of its shadow. [1913 Webster]

3. (Geom.) The space included between the boundary lines of two similar parallelograms, the one within the other, with an angle in common; as, the gnomon bcdefg of the parallelograms ac and af. The parallelogram bf is the complement of the parallelogram df. [1913 Webster]

4. The index of the hour circle of a globe.

The Collaborative International Dictionary of English. 2000.

(of a dial)

Look at other dictionaries:

  • gnomon — [ gnɔmɔ̃ ] n. m. • 1547; mot lat., du gr. ♦ Ancien instrument astronomique composé d une tige verticale (⇒ style) faisant ombre sur une surface plane. ⇒ cadran (solaire). ● gnomon nom masculin (latin gnomon, onis, du grec gnômôn, onos) Cadran… …   Encyclopédie Universelle

  • gnomon — GNOMÓN, gnomoane, s.n. Instrument antic folosit pentru a determina meridianul locului, constituind cel mai vechi tip de cadran solar. – Din fr. gnomone. Trimis de gall, 13.09.2007. Sursa: DEX 98  gnomón s. n., pl. gnomoáne Trimis de siveco,… …   Dicționar Român

  • gnomon — vertical shaft that tells time by the shadow it casts (especially the triangular plate on a sundial), 1540s, from L. gnomon, from Gk. gnomon indicator, lit. one who discerns, from gignoskein to come to know (see GNOSTIC (Cf. gnostic) (adj.)) …   Etymology dictionary

  • gnômon — s. m. Projetor da sombra no relógio de sol. • [Brasil] Plural: gnômones ou gnômons.   ‣ Etimologia: latim gnómon, onis, ponteiro   ♦ Grafia em Portugal: gnómon …   Dicionário da Língua Portuguesa

  • gnómon — s. m. Projetor da sombra no relógio de sol. • [Portugal] Plural: gnómones.   ‣ Etimologia: latim gnómon, onis, ponteiro   ♦ Grafia no Brasil: gnômon …   Dicionário da Língua Portuguesa

  • gnomon — (Del lat. gnomon, y este del gr. γνώμων). 1. m. Indicador de las horas en los relojes solares más comunes, frecuentemente en forma de un estilo. 2. Antiguo instrumento de astronomía, compuesto de un estilo vertical y de un plano o círculo… …   Diccionario de la lengua española

  • Gnomon — Gnomon, eine Einrichtung, die schon bei den ältesten Kulturvölkern dazu benutzt wurde, die Höhe der Sonne und damit die Tageszeit besonders im Moment des Mittags (der Kulmination) zu bestimmen. Zunächst bestanden diese Instrumente aus hohen… …   Lexikon der gesamten Technik

  • Gnomon — Gnomon, eine schon seit den ältesten Zeiten gebräuchliche Vorrichtung zur Bestimmung der Sonnenhöhe, namentlich der Culmination der Sonne, also des wahren Mittags. Er besteht in einer auf horizontalem Boden senkrecht stehenden Stange od. Säule,… …   Herders Conversations-Lexikon

  • gnomon — gnòmōn m <G gnomóna, N mn gnomóni> DEFINICIJA antička astronomska sprava, štap okomit na vodoravnu plohu, primitivni sunčani sat; sjenomjer ETIMOLOGIJA lat.: kazaljka sunčeva sata ← grč. gnṓmōn: tumač, otkrivač, kazivač …   Hrvatski jezični portal

  • gnomon — [nō′män΄] n. [L < Gr gnōmōn, one who knows or examines, index of a sundial < base of gignōskein, to KNOW] 1. a column or pin on a sundial, etc. that casts a shadow indicating the time of day: see SUNDIAL 2. the part of a parallelogram… …   English World dictionary

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