What is the English plural of creterion?

There is no Word in English language spelled "creterion".

Perhaps you are referring to "criterion". The Word "criterion" means a characteristic or a specific standard, one that must be used when judging or measuring something. Because it is a loan Word (we borrowed it from the Greek language, where it means to separate, or to judge something), it has an unusual plural: criteria. Many people incorrectly use "criteria" for both singular and plural, but they shouldn't. In the plural, "criteria" is used like this: What are the criteria for winning the essay contest?