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pentavalent

American  
[pen-tuh-vey-luhnt, pen-tav-uh-] / ˌpɛn təˈveɪ lənt, pɛnˈtæv ə- /

adjective

Chemistry.

  1. having a valence of 5.

    pentavalent arsenic.

  2. quinquevalent.

pentavalent British  
/ ˌpɛntəˈveɪlənt /

adjective

  1. Also: quinquevalent.  chem having a valency of five

"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

Etymology

Origin of pentavalent

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

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.