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Definition of quadruplicate: 1. Fourfold; doubled twice; four times repeated; as, a quadruplicate ratio, or a quadruplicate proportion.
2. Raised to the fourth power.
3. To make fourfold; to double twice; to quadruple.

Synonyms:

quadruplex, four-fold, multiple

quadruplication (part of speech: noun)

quadruplication

quadruplicate (part of speech: adjective)

fourfold, quadruple

See how do you define quadruplicate. See quadruplicate definition.