quadruplicate

US: /n., adj. kwɑˈdruplɪkɪt; v. -ˌkeɪt/

US: (n., adj. kwo dro̅o̅′pli kit; v. kwo dro̅o̅′pli kāt′)

Inflections of 'quadruplicate' (v): (⇒ conjugate)

quadruplicates

v 3rd person singular

quadruplicating

v pres p

quadruplicated

v past

quadruplicated

v past p

WordReference Random House Learner's Dictionary of American English © 2025

quad•ru•pli•cate /n., adj. kwɑˈdruplɪkɪt; v. -ˌkeɪt/   n., adj., v., -cat•ed, -cat•ing. 
n. [countable]

1. one of four copies or identical items.

adj. 

2. made up of four identical parts.

v. [~ + object]

3. to produce or copy in quadruplicate.
4. to make four times as great.

quad•ru•pli•ca•tion /kwɑˌdruplɪˈkeɪʃən/  n. [uncountable] See -quad-, -plic-.

WordReference Random House Unabridged Dictionary of American English © 2025

quad•ru•pli•cate  (n., adj. kwo dro̅o̅′pli kit;v. kwo dro̅o̅′pli kāt′), n., adj., v., -cat•ed, -cat•ing. 
n. 

1. one of four copies or identical items, esp. copies of typewritten material.
2. Idioms in quadruplicate, in four identical copies.

adj. 

3. consisting of four identical parts.
4. pertaining to a fourth item or copy of something.

v.t. 

5. to produce or copy in quadruplicate.
6. to make four times as great.

• Latin quadruplicātus (past participle of quadruplicāre), equivalent. to quadruplic- (stem of quadruplex quadruplex) + -ātus -ate¹
• 1650–60

quad•ru′pli•ca′tion, quad•ru•pli•ca•ture  (kwo dro̅o̅′pli kə chər), n. 

Collins Concise English Dictionary © HarperCollins Publishers::

quadruplicate adjective / kwɒˈdruːplɪkɪt -ˌkeɪt/

1. fourfold or quadruple

verb / kwɒˈdruːplɪˌkeɪt/

1. to multiply or be multiplied by four

noun / kwɒˈdruːplɪkɪt -ˌkeɪt/

1. a group or set of four things

Etymology: 17th Century: from Latin quadruplicāre to increase fourfold