Which is the correct spelling volcano or volcano? With uncountable nouns, the singular form is used. With countable nouns, zero is always followed by plural nouns. Zero means no and the noun that follows it should surely be in singular form. ”Zeros” or “Zeroes”? Which should you use? According to the Merriam-Webster Dictionary, the plural of “zero” can either be “zeros” or “zeroes.” They are both correct.