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quinquivalent
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quinquivalent
quinquivalent, a. Chem. (kwɪnˈkwɪvələnt) [f. L. quinqui- five- + valent as in equivalent, quadrivalent.] Capable of combining with five univalent atoms; pentavalent.1877 Watts Fownes' Chem. I. 256 Quinquivalent elements, or Pentads. 1880 E. Cleminshaw Wurtz' Atom. Th. 229 It is quinquivalent in chlo...
Oxford English Dictionary
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pentavalent
pentavalent, a. Chem. (pɛnˈtævələnt) [f. penta- + L. valēnt-em having power or value.] Having the combining power of five atoms of hydrogen or other univalent element; quinquivalent.1871 Roscoe Elem. Chem. 174 The elements of the nitrogen group possess a peculiarity by which they frequently appear a...
Oxford English Dictionary
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quinque-
quinque- (ˈkwɪnkwɪ) a first element (a. L. quinque- five-) employed in combs. with the sense ‘having, consisting of, etc. five (things specified)’. Examples of such formations in classical L. are the ns. quinquefolium, quinquennium, quinquerēmis, quinquevir(ī), the adjs. quinquefolius, -mestris, qui...
Oxford English Dictionary
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tantalic
tantalic, a.1 Chem. (tænˈtælɪk) [f. tantalum + -ic.] Of or derived from tantalum; in names of chemical compounds in which tantalum is pentavalent, as tantalic chloride, tantalic fluoride; tantalic oxide, tantalic anhydride, Ta2O5; tantalic acid, hydrated tantalic oxide, H2O.Ta2O5.1842 Parnell Chem. ...
Oxford English Dictionary
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sex-
sex- (sɛks) repr. L. sex six in combination (as in sexangulus sexangular, sexennis sexennial), occurs in many mod. formations, chiefly scientific or technical. (In some of these sexi- is also used.) 1. Forming parasynthetic compounds, as sexannulate (= six-ringed), sexarticulate, sexcuspidate, sexlo...
Oxford English Dictionary
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