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-onium

American  
Chemistry.

  1. a suffix used in the names of complex cations.

    oxonium.

Etymology

Origin of -onium

Extracted from ammonium

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

This is a situation which agrees with no other city in all Egypt, except that which was the Onium of the later Jews.

From Project Gutenberg

This was also called Onium, and Hanes, the I�nisus of Herodotus.

From Project Gutenberg

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.