But when a horse develops laminitis, an inflamation of the tissue that bonds the horse's bone to the inner wall of the hoof, the hoof doesn't work properly, the animal is in pain and its health can be severely compromised. No lesser horse than the great Secretariat, the 1973 Triple Crown winner, was felled by laminitis.
â¢ URETER (noun) The noun URETER has 1 sense: 1. either of a pair of thick-walled tubes that carry urine from the kidney to the urinary bladder. Familiarity information: URETER used as a noun is very rare.
How to Read Your Eyeglass Prescription. When you look at your prescription for eyeglasses, you will see numbers listed under the headings of OS and OD. They are Latin abbreviations: OS (oculus sinister) means the left eye and OD (oculus dextrus) means the right eye. Occasionally, you will see a notation for OU, which means something involving both eyes.