measurable (adj.) Look up measurable at Dictionary.com
c. 1300, "moderate," from Old French mesurable "restrained, moderate, sensible; restricted," from Late Latin mensurabilis, from mensurare "to measure," from Latin mensura "a measuring, a measurement; thing to measure by," from mensus, past participle of metiri "to measure," from PIE root *me- (2) "to measure." Meaning "that can be measured" is from mid-14c. Related: Measurably.