[dih-mon-struh-buh l, dem-uh n-]


capable of being demonstrated or proved.
clearly evident; obvious: a demonstrable lack of concern for the general welfare.

Origin of demonstrable

1350–1400; Middle English < Old French < Late Latin dēmonstrābilis, equivalent to Latin dēmonstrā(re) (see demonstrate) + -bilis -ble
Related formsde·mon·stra·bil·i·ty, de·mon·stra·ble·ness, nounde·mon·stra·bly, adverbnon·de·mon·stra·bil·i·ty, nounnon·de·mon·stra·ble, adjectivenon·de·mon·stra·ble·ness, nounnon·de·mon·stra·bly, adverbun·de·mon·stra·ble, adjectiveun·de·mon·stra·ble·ness, nounun·de·mon·stra·bly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for demonstrable

Contemporary Examples of demonstrable

Historical Examples of demonstrable

British Dictionary definitions for demonstrable



able to be demonstrated or proved
Derived Formsdemonstrability or demonstrableness, noundemonstrably (ˈdɛmənstrəblɪ, dɪˈmɒn-), adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for demonstrable

c.1400, from Latin demonstrabilis, from demonstrare (see demonstration). Related: Demonstrably.

Online Etymology Dictionary, © 2010 Douglas Harper