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septavalent

[sep-tuh-vey-luh nt] /ˌsɛp təˈveɪ lənt/
adjective, Chemistry
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for septavalent

septavalent

/ˌsɛptəˈveɪlənt/
adjective
1.
(chem) another word for heptavalent
Word Origin
C19: from sept(ivalent) + (hept)avalent

septivalent

/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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