urine
[U] Uncountable
This term is primarily used in medical, scientific, or formal contexts. It carries a clinical neutrality that strips away the visceral disgust often associated with the act of excretion, focusing instead on the fluid as a biological specimen or a chemical compound. In casual conversation, people typically avoid this word in favor of euphemisms or more colloquial terms like pee. Using urine in a social setting can feel overly sterile or jarringly blunt, as it shifts the context from a natural bodily function to a laboratory observation.
Used exclusively as a mass noun because it refers to a liquid substance regardless of the amount.