allometry

in biology
https://doi.org/10.1351/goldbook.15457
Measurement of the rate of growth of a part or parts of an organism relative to the growth of the whole organism.
Source:
PAC, 2007, 79, 1153. (Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)) on page 1165 [Terms] [Paper]