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Double; twofold. Duplicate proportion or ratio (Math.), the proportion or ratio of squares. Thus, in geometrical proportion, the first term to the third is said to be in a duplicate ratio of the first to the second, or as its square is to the square of the second. Thus, in 2, 4, 8, 16, the ratio of 2 to 8 is a duplicat…

Folded lengthwise along the midrib, the upper face being within; -- said of leaves or petals in vernation or æstivation.

Having the edges bent abruptly toward the axis; -- said of the parts of the calyx or corolla in æstivation.

Double; doubled; reduplicative; repeated.

and a half as great (as another thing); having the ratio of two and a half to one. Sesquiduplicate ratio (Math.), the ratio of two and a half to one, or one in which the greater term contains the lesser twice and a half, as that of 50 to 20.

Expressed by the square root; -- said of ratios. Subduplicate ratio, the ratio of the square roots, or the square root of a ratio; thus, the subduplicate ratio of a to b is *a to *b, or *a/b.

to a different part. [Obs.] If we abduce the eye unto either corner, the object will not duplicate. Sir T. Browne.

lets were inclosed in an outer case (often called the envelope), on which was inscribed a duplicate of the inscription on the inclosed tablet.

A duplicate book, register, or account, kept to correct or check another account or register; a counter register. [Obs.] Johnson.

To make a copy or copies of; to write; print, engrave, or paint after an original; to duplicate; to reproduce; to transcribe; as, to copy a manuscript, inscription, design, painting, etc.; -- often with out, sometimes with off. I like the work well; ere it be demanded (As like enough it will), I'd have it copied. Shak.…

A duplicate roll (record or account) kept by an officer as a check upon another officer's roll. Burrill.

A duplicate part or copy of an indenture, deed, etc., corresponding with the original; -- now called counterpart. Read, scribe; give me the counterpane. B. Jonson.

responding to another part; anything which answers, or corresponds, to another; a copy; a duplicate; a facsimile. In same things the laws of Normandy agreed with the laws of England, so that they seem to be, as it were, copies or counterparts one of another. Sir M. Hale.

Having two heads; bicipital. Double-headed rail (Railroad), a rail whose flanges are duplicates, so that when one is worn the other may be turned uppermost.

The act of duplicating, or the state of being duplicated; a doubling; a folding over; a fold.

A true copy, duplicate, or extract of an original writing or record, esp. of amercements or penalties set down in the rolls of court to be levied by the bailiff, or other officer. Cowell. Estreat of a recognizance, the extracting or taking out a forfeited recognizance from among the other records of the court, for the…

t in writing between two or more parties, whereof each party has usually a counterpart or duplicate; sometimes in the pl., a short form for indentures of apprenticeship, the contract by which a youth is bound apprentice to a master. The law is the best expositor of the gospel; they are like a pair of indentures: they a…

Having induplicate sepals or petals in æstivation.

Double-faced; deceitful. Janus-faced lock, one having duplicate faces so as to go upon a right or a left hand door, the key entering on either side indifferently. Knight.

Other; duplicate, corresponding to; resembling; hence, metameric; as, meta-arabinic, metaldehyde.