About
The character 脲, denoting the chemical compound urea, was formulated in modern scientific context by combining the semantic component 尿, meaning urine, with the radical 月, a variant of 肉 that signifies bodily matters, thus structurally reflecting its origin as a nitrogenous substance found in urine. Its etymology is directly compositional, and as a specialized term adopted for biochemistry, its meaning has remained exclusively fixed to urea without divergence.