Dryden.
Conclusive presumption. See under Conclusive. -- Presumption of fact
(Law), an argument of a fact from a fact; an inference as to the
existence of one fact not certainly known, from the existence of some
other fact known or proved, founded on a previous experience of their
connection; supposition of the truth or real existence of something,
without direct or positive proof of the fact, but grounded on
circumstantial or probable evidence which entitles it to belief.
Burrill. Best. Wharton. -- Presumption of law (Law), a postulate
applied in advance to all cases of a particular class; e. g., the
presumption of innocence and of regularity of records. Such a
presumption is rebuttable or irrebuttable.
Pre*sump"tive (?), a. [Cf. F. prÈsomptif.] 1. Based on presumption or
probability; grounded on probable evidence; probable; as, presumptive
proof.