PRESUMPTION Copy link • PRESUMPTIONOpinion, conjectura; opinio; praesumta opinio (Quint.). Prima facie probability. This is a point that, etc., this constitutes a point that, etc., ex aliqua re (conjectura) colligere potes, or *colligi posse videtur. Boldness, daring, audacia; confidentia; temeritas. arrogantia.