- urineLiquid waste consisting of water, salts, and urea, which is made in the kidneys, stored in the bladder, then released through the urethra.
- urocanicOf or pertaining to urocanic acid or its derivatives
- urocanic acidAn intermediate in the catabolism of L-histidine, transformed in the liver by urocanate hydratase (or urocanase) into 4-imidazolone-5-propionic acid and subsequently to glutamic acid.