brain weight to body weight ratio brain wet weight brain wet weight to body weight ratio 2014-05-29T11:41:20Z A calculated measurement in which the weight of the brain after removal from the body but without dessication is divided by the total weight of the body of the organism, and the result presented as a ratio, fraction, quotient or percentage thus normalizing it to body weight and, by extension, to the size of the organism. CMO:0002410 JSmith brain wet weight as percentage of body weight clinical_measurement_ontology