body length, nose to rump body mass index nose to rump body mass index 2017-08-25T17:00:55Z A calculated measurement of body size in which the weight of an animal is divided by the square of the body length, where body length is measured from the tip of the nose to the rump, that is, the base of the tail. BMI using body length, nose to rump BMI using nose to rump body length CMO:0002781 clinical_measurement_ontology jesmith nose to rump BMI