Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Pentavalent.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Alternative spelling of quinquivalent.

from The Century Dictionary and Cyclopedia

  • In chem., capable of being combined with or exchanged for five hydrogen atoms; having an equivalence of five.

Etymologies

quinque- + -valent (Wiktionary)

Examples

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