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pentavalent

[pen-tuh-vey-luh nt, pen-tav-uh-] /ˌpɛn təˈveɪ lənt, pɛnˈtæv ə-/
adjective, Chemistry.
1.
having a valence of 5:
pentavalent arsenic.
2.
quinquevalent (def 2).
Origin of pentavalent
1870-1875
First recorded in 1870-75; penta- + -valent
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for pentavalent

pentavalent

/ˌpɛntəˈveɪlənt/
adjective
1.
(chem) having a valency of five Also quinquevalent
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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