There are multiple definitions:

1. heart weight(English)

   • see also tibia length
   • BW, BH
   • Cardiology, Pathology
   • https://doi.org….insight.139910

2. hydrostatic weighing [densitometry](English)

   • calculated e.g. using the following equations: a) the 2-C model developed by Siri,3 based on a fat-free body density of 1.100 g/cc; b) the 2-C model developed by Brozek et al.
   • ADP, BF, BMC, BMD, BMI, DXA, FFM, LBM, QA
   • Adiposity, Diet, Metabolism
   • https://doi.org…ocd.2025.101595