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septavalent

[sep-tuh-vey-luh nt]
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adjective Chemistry.
  1. septivalent.

septivalent

or sep·ta·va·lent

[sep-tuh-vey-luh nt]
adjective Chemistry.
  1. having a valence of seven; heptavalent.

Origin of septivalent

First recorded in 1870–75; septi- + -valent
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for septavalent

septavalent

adjective
  1. chem another word for heptavalent

Word Origin

C19: from sept (ivalent) + (hept) avalent

septivalent

septavalent (ˌsɛptəˈveɪlənt)

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