Definition of "ascertainably" []

• In a way that can be ascertained. (adverb)

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• "According to Larry Laudan (1983, 121), it “has the untoward consequence of countenancing as ˜scientific™ every crank claim which makes ascertainably false assertions”."
• "The figures of Catholic population given above include only those who are ascertainably members of the Church -- all converts being subjected to careful tests and instruction before baptism."
• "But it is precisely to this group to which all the ascertainably insane parents of British men of genius belong."