Help Wordnik hunt for a million missing words by backing our Kickstarter!


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.


quinque- + -valent (Wiktionary)


Sorry, no example sentences found.


Log in or sign up to get involved in the conversation. It's quick and easy.