Definition of proportionability in English:

proportionability

Pronunciation /prəˌpɔːʃnəˈbɪlɪti/ /prəˌpɔːʃ(ə)nəˈbɪlɪti/

noun

rare

Origin

Late 17th century; earliest use found in John Sergeant (1623–1707), Roman Catholic controversialist and philosopher. From proportionable + -ity. Compare French (rare) proportionnabilité, post-classical Latin proportionabilitas.