determination

When used to mean 'firmness of purpose,' the word is typically an uncountable noun (e.g., 'She has great determination'), meaning you cannot count it as one, two, or three determinations. In legal or scientific contexts—referring to a decision or a calculation—the word can be countable and used in the plural form (e.g., 'The court's determinations'). Note that while 'determination' sounds similar to 'determining,' it is the noun form used to describe the quality of being determined or the result of a process.