Definition of "unascertained" [unascertained]

• Not ascertained; undetermined; unknown. (adjective)

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• "Dr Timothy Lyons, a pathologist with the Department of Forensic Medicine at Newcastle, who appeared via video link, said Ms Nixon's death was 'unascertained'."
• "The figures include deaths described both as sudden infant deaths and those for which the cause is "unascertained" after a full investigation."
• "At an initial postmortem, the verdict was "unascertained, pending further investigation"."