Source : Webster's Revised Unabridged Dictionary (1913)

Mensurable \Men"su*ra*ble\, a. [L. mensurabilis, fr. mensurare
   to measure, fr. mensura measure: cf. F. mensurable. See
   {Measurable}, {Measure}.]
   Capable of being measured; measurable.

Source : WordNet®

mensurable
     adj : possible to be measured; "measurable depths" [syn: {measurable}]
           [ant: {immeasurable}]