DEMONSTRABLE
Source: 566, 567
demonstrable. Demonstrable, a. that admits of certain proof
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De‐mon″stra‐ble (?), a. [[L. demonstrabilis: cf. OF. demonstrable, F. démontrable.]] 1. 1. Capable of being demonstrated; that can be proved beyond doubt or question.
The grand articles of our belief are as demonstrable as geometry. Glanvill. 2. 2. Proved; apparent. Shak.