1. a combining form meaning "fire," "heat," "high temperature," used in the formation of compound words: pyrogen; pyrolusite; pyromancy.
2. Chem. a combining form used in the names of inorganic acids, indicating that the acid's water content is intermediate between that of the corresponding ortho- (more water) and meta- (least water) acids (pyroantimonic, H4Sb2O7, pyroarsenic, H4AS2O7, and pyrosulfuric, H2S2O7, acids). The combining form is also used in the names of the salts of these acids. If the acid ends in -ic, the corresponding salt ends in -ate (pyroboric acid, H2B4O7, and potassium pyrobate, K2B4O7, or pyrosulfuric, H2S2O7, and pyrosulfate, N2S2O7); if the acid ends in -ous, the corresponding salt ends in -ite (pyrophosphorous acid, H4P2O5, potassium pyrophosphite, K4P2O5).
Also, pyr-.
[ < Gk pyro-, comb. form of pyr FIRE]

* * *

Universalium. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • Pyro — Saltar a navegación, búsqueda Pyro Publicación Marvel Comics Primera aparición Uncanny X Men #141 (Enero 1981) Creador(es) Chris Claremont y John Byrne Características Nombre real St. John Allerdyce Alias conocidos …   Wikipedia Español

  • Pyro — Personnage de fiction apparaissant dans X Men Nom original Saint John Allerdyce Alias …   Wikipédia en Français

  • Pyro — may refer to:In its meaning of fire:*Fire itself ndash; Pyr means fire in Greek *An aluminum powder used in pyrotechnics for white flame and brightness *Pyrotechnics, flames and explosives used in special effects *Pyromaniac, a person who is… …   Wikipedia

  • pyro- — ♦ Élément, du gr. pur, puros « feu ». pyr(o) élément, du gr. pûr, puros, feu . || CHIM Préfixe indiquant une décomposition sous l action de la chaleur. pyro V. pyr(o) . ⇒P …   Encyclopédie Universelle

  • Pyro- — Pyr Pyr . [Gr. ?, ?, fire.] Combining forms designating fire or heat; specifically (Chem.), used to imply an actual or theoretical derivative by the action of heat; as in pyrophosphoric, pyrosulphuric, pyrotartaric, pyrotungstic, etc. [1913 Webs …   The Collaborative International Dictionary of English

  • pyro- — comb. form meaning fire, from Gk. pyro , combining form of pyr (gen. pyros) fire (see FIRE (Cf. fire) (n.)) …   Etymology dictionary

  • Pyro — Py ro, n. (Photog.) Abbreviation of pyrogallic acid. [Colloq.] [1913 Webster] …   The Collaborative International Dictionary of English

  • Pyro... — Pyro... (v. gr. Pyr, Feuer), Feuer... Pyroballist, ein Feuerwerker. Pyroballistik (Pyrobolik), Feuerwerkerkunst. Pyrodynamik, die Lehre von den Kräften des Feuers …   Pierer's Universal-Lexikon

  • Pyro... — Pyro..., in der chemischen Nomenklatur Bezeichnung mancher Verbindungen, die durch Erhitzen aus andern entstanden sind, z. B. Pyrophosphorsäure aus Phosphorsäure …   Meyers Großes Konversations-Lexikon

  • Pyro... — Pyro...,   1) Vorsatz zur Kennzeichnung anorganischer Säuren, die durch Abspaltung eines Wassermoleküls aus zwei Molekülen der Orthosäure entstehen, z. B. die Pyroschwefelsäure (nomenklaturgerecht: Dischwefelsäure); 2) Vorsatz zur Bezeichnung… …   Universal-Lexikon

  • pyro... — pyro...   [griechisch pỹr »Feuer«], vor Vokalen meist verkürzt zu pyr..., Wortbildungselement mit den Bedeutungen: 1) Feuer, z. B. Pyromanie, Pyracantha; 2) hohe Temperatur, z. B. Pyrometer, Pyrheliometer; 3) Fieber, z. B. Pyrogene …   Universal-Lexikon

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”