trip·​let | \ ˈtri-plət How to pronounce triplet (audio) \

Definition of triplet

1 : one of three offspring produced in the same pregnancy
2a : a combination, set, or group of three
b : a group of three elementary particles (such as positive, negative, and neutral pions) with different charge states but otherwise similar properties
c : an atom or molecule with an even number of electrons that have a net magnetic moment
d : codon
3 : a group of three musical notes or tones performed in the time of two of the same value
4 : a unit of three lines of verse

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Examples of triplet in a Sentence

the theater piece is actually a triplet of comedy sketches, all of them having romantic love as their theme
Recent Examples on the Web The packs are wired similarly—battery cells wired in parallel increase the amp-hour rating of the pack while cells connected in series increase the voltage—with three cells in parallel and 96 (Chevy) or 98 (Hyundai) triplets connected in series. Car and Driver, "Explained: Car and Driver Will Now Take Your Questions, Part Two," 18 Apr. 2020 Like the Cowboys of old, who featured Hall-of-Famers Troy Aikman, Emmitt Smith and Michael Irvin, this year’s team has a triplet of talented players at the skill positions in quarterback Dak Prescott, running back Ezekiel Elliott and Cooper. Dave Birkett, Detroit Free Press, "Detroit Lions' Darius Slay readies for Cowboys' Amari Cooper; Matthew Stafford out again," 14 Nov. 2019 The triplets were delivered at 28 weeks and 5 days in September 2017 and stayed in the neonatal intensive care unit for months. Christina Caron, New York Times, "A $4 Million NICU Bill: The Price of Prematurity," 11 Feb. 2020 His constituents were well versed in the details of his personal life, including the birth of triplets in 1996 and the death of his first wife, Noel, who succumbed to cancer seven years later, at age 46. Washington Post, "D.C. Council member Jack Evans to resign over ethics violations," 7 Jan. 2020 The Titans might have a nice set of triplets on their hands in QB Ryan Tannehill, RB Derrick Henry and WR A.J. Brown. Nate Davis, USA TODAY, "32 things we learned from Week 14 of the 2019 NFL season," 9 Dec. 2019 Following large upswings from 1980 to 1998, triplet and higher-order multiple births in the United States fell 41% from 1998 to 2014, according to the CDC. Julie Washington, cleveland, "Barberton couple ‘excited to meet’ their quintuplets soon," 18 Feb. 2020 Meanwhile, the Cavs’ new triplets -- Tristan Thompson, Osman and Porter -- had just 32 points on 11-of-22 (50%) from the field to go with 17 rebounds, six assists, one steal and one block. Chris Fedor, cleveland, "Kevin Porter Jr’s ‘dope’ first NBA start shows how far he’s come in short time: Fedor’s five observations," 19 Nov. 2019 Phoebe giving birth to her brother’s triplets was both incredibly sweet and incredibly weird. Andrea Wurzburger,, "Sorry, but Rachel Should Have Ended Up With Joey on Friends," 20 Sep. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'triplet.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of triplet

1656, in the meaning defined at sense 4

History and Etymology for triplet

triple entry 2

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Time Traveler for triplet

Time Traveler

The first known use of triplet was in 1656

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Statistics for triplet

Last Updated

29 Apr 2020

Cite this Entry

“Triplet.” Dictionary, Merriam-Webster, Accessed 5 Jun. 2020.

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More Definitions for triplet


How to pronounce triplet (audio)

English Language Learners Definition of triplet

: one of three babies that are born at the same time to the same mother
: a combination, set, or group of three things


trip·​let | \ ˈtri-plət How to pronounce triplet (audio) \

Kids Definition of triplet

1 : a combination, set, or group of three
2 : one of three offspring born at one birth


trip·​let | \ ˈtrip-lət How to pronounce triplet (audio) \

Medical Definition of triplet

1a : a combination, set, or group of three
b : an atom or molecule with an even number of electrons that have a net magnetic moment
c : codon
2a : one of three children or offspring born at one birth
b triplets plural : a group of three offspring born at one birth
3 : a combination of three lenses

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More from Merriam-Webster on triplet

Thesaurus: All synonyms and antonyms for triplet

Spanish Central: Translation of triplet

Nglish: Translation of triplet for Spanish Speakers

Britannica English: Translation of triplet for Arabic Speakers

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