Capable of change; due to change.
- Nuttall's Standard dictionary of the English language. By Nuttall, P.Austin. Published 1914. (adjective) (adj.) (adjective)
Changeable; chemical changes occurring in living organism; metamorphosing.
- A dictionary of scientific terms. By Henderson, I. F.; Henderson, W. D. Published 1920. (adjective) (adj.) (adjective)

Usage examples:

There is a strong element of suggestion in this that acts very favorably and greatly influences the actual power of such intermissions to help nature recover her lost metabolic faculties.
- Psychotherapy by James J. Walsh
The metabolic rate is thus a gauge of the energy pressure within the organism.
- The Glands Regulating Personality by Louis Berman, M.D.
As the child grows, its metabolic waste matter is greatly increased, while all these poisonous substances must finally be eliminated by the mother.
- The Mother and Her Child by William S. Sadler Lena K. Sadler