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septivalent

or sep·ta·va·lent

[ sep-tuh-vey-luhnt ]

adjective

, Chemistry.
  1. having a valence of seven; heptavalent.


septivalent

/ ˌsɛptəˈveɪlənt; ˌsɛptɪˈveɪlənt /

adjective

  1. chem another word for heptavalent
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word History and Origins

Origin of septivalent1

First recorded in 1870–75; septi- + -valent

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septisyllableseptuagenarian