"Ionate" is a verb that means to convert an element or compound into an ion by adding or removing electrons. It is pronounced [ˈaɪəneɪt] (eye-uh-nate) and is spelled with the letters "i-o-n-a-t-e". The first syllable "i" is pronounced like the word "eye", followed by the schwa sound "uh" and then the syllable "nate", which rhymes with "bate". The spelling of "ionate" follows the common English practice of adding "-ate" to the end of a word to indicate a verb form.
"Ionate" is not a recognized word in the English language, and therefore, it does not have a standard dictionary definition. It is possible that the word was misspelled or it is of a specialized or technical nature. If you could provide more context or clarify the spelling of the word, I would be happy to assist you further in finding an appropriate definition.