# Emily Dickinson Lexicon

## Definition for DU'PLI-CATE

DU'PLI-CATE, a. [L. *duplicatus*, from *duplico*, to double, from *duplex*, double, twofold; *duo*, two, and *plico*, to fold. See Double.]

Double; twofold.
*Duplicate proportion or ratio*, is 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 duplicate of that of 2 to 4, or as the square of 2 is to the square of 4.

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