Criterion
A singular noun.
Your criteria is(goals) and constraints are(limits).
singular= Gamete plural= Gametes
The noun 'Judy' is a singular, concrete, proper noun, the name of a person.
The singular possessive of criteria is criteria's.
The singular form of the word "criteria" is "criterion."
Criteria is already a plural - it is used incorrectly as a singular. The singular is criterion.
Criteria is plural. Criterion is singular. Don't mess with Latin!
Criterion is the singular form.
The word 'criteria' is the plural form of the singular word 'criterion'. 'Those are the criteria that I used in making my decision.' 'That is the criterion that I used in making my decision.' It is wrong to use the word 'criteria' as a singular. Similarly, it is wrong to use 'phenomena' as a singular. It is the plural form of the singular word 'phenomenon'.
Criteria is plural. Criterion is singular. The criteria to pass a maths exam is being able to add up and subtract. The criterion of passing an addition exam is being able to add up.
Criterion is the singular. The plural is criteria.
Criterion
"Criteria" is the plural form of the word "criterion." It refers to standards or principles used for making a judgment or decision.
Criterion is singular. The word criteria is actually the plural.
I take it you mean 'What is the singular form of the word criteria?' If so, the answer is criterion.