də̇ˈmänstrəbəl, dēˈ-; ˈdemən- adjective
Etymology: Middle English, from Latin demonstrabilis, from demonstrare to demonstrate + -abilis -able
1. : capable of being demonstrated
demonstrable and systematically classifiable truths — Havelock Ellis
2. : apparent , evident , palpable
uttering demonstrable nonsense — Aldous Huxley
• de·mon·stra·ble·ness noun -es
• de·mon·stra·bly adverb