Cadmia


Cadmia

In alchemy, cadmia (Latin for calamine), is an oxide of zinc (tutty) which collects on the sides of furnaces where copper or brass was smelted, and zinc sublimed. The term is also applied to an ore of cobalt.

For the cadmia produced in furnaces, there were five identified kinds: the first called "botrytis", as being in the form of a bunch of grapes; the second, "ostracitis", as resembling a sea shell; the third, "placitis", for resembling a crust; the fourth, "capnitis"; and the fifth, "calamitis", which hung around certain iron rods that were used to stir material in the furnace; being shaken off, the cadmia resembled the figure of a quill, called in the Latin, "calamus". The "cadmia botrytis" was found in the middle of the furnace; the ostrytis at the bottom; the placitis at the top; and the capnitis at the mouth of the furnace.

In pre-modern medicine, cadmia was used as a desiccative and detersive, in moist stinking ulcers, causing the area to become healed by the formation of scar tissue. The "botrytis" and "placitis" were also used for diseases of the eyes.

The term cadmia was formerly applied to the mineral calamine, or "lapis calaminaris".

References

#"Webster's Revised Unabridged Dictionary" (1913)
#1728


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  • cadmia — CADMIÁ, cadmiez, vb. I. tranz. A acoperi suprafaţa unui obiect metalic cu un strat subţire de cadmiu în scopul protejării ei contra eroziunii. [pr.: mi a] – Din cadmiu. Trimis de viorelgrosu, 13.09.2007. Sursa: DEX 98  cadmiá vb. (sil. mi a),… …   Dicționar Român

  • Cadmia — Cad mi*a, n. [L. cadmia calamine, Gr. ?. Cf. {Calamine}.] (Min.) An oxide of zinc which collects on the sides of furnaces where zinc is sublimed. Formerly applied to the mineral calamine. [1913 Webster] …   The Collaborative International Dictionary of English

  • Cadmĭa — (lat., Cadmir), so v.w. Galmei. Cadmia fornacum, s. Ofenbruch …   Pierer's Universal-Lexikon

  • cadmía — (Del lat. cadmīa, y este del gr. καδμεία). 1. f. Óxido de cinc sublimado durante la fundición de este metal, que lleva ordinariamente consigo óxido de cadmio. 2. Sublimado metálico adherido a una chimenea o a la bóveda de un horno …   Diccionario de la lengua española

  • Cadmĭa — Cadmĭa, im Altertum der Galmei, benannt nach Kadmus, dem Gründer Thebens, der die Griechen mit diesem Mineral bekannt gemacht haben soll; C. fornacum, Ofenbruch, Gichtschwamm (s.d.); C. fossilis, Galmei …   Meyers Großes Konversations-Lexikon

  • Cadmia — Cadmĭa (lat.), Galmei; C. fornācum, Gichtschwamm …   Kleines Konversations-Lexikon

  • CADMIA — quid sit, lege apud Plin. l. 34. c. 10. Ibi paulo aliter, quam Posidonius refert, qui sic habet apud Strab. l. 3. Β᾿πείφησιν ὁ Ποσειδώνιος, καὶ ὁ Κύπριος χαλκὸς μόνος φέρει τὴν Κάδμειαν λίθον. Plin. autem, Omnis, Cadmeia in Cypri fornacibus… …   Hofmann J. Lexicon universale

  • cadmia — s. f. Óxido de zinco que se deposita nas chaminés dos fornos de fundição …   Dicionário da Língua Portuguesa

  • cadmía — (Del gr. kadmeia, calamina.) ► sustantivo femenino 1 METALURGIA Mezcla de hollín y óxidos metálicos que se acumula en el tragante de los altos hornos. SINÓNIMO atutía 2 METALURGIA Cualquier sustancia metálica adherida a las paredes o chimenea del …   Enciclopedia Universal

  • cadmia — càd·mia, cad·mì·a s.f. 1. OB TS chim. antico nome del carbonato di zinco, del silicato di zinco e di altri sali di zinco 2. TS metall. residuo fuligginoso a base di ossido di zinco che si forma nei forni e nei recipienti di fusione dei metalli… …   Dizionario italiano


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