plural triplets
1
: one of three offspring produced in the same pregnancy
2
a
: 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, tones, or beats performed in the time of two of the same value
4
: a unit of three lines of verse
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
Two of the triplets, David and Paula, were reportedly living in Portugal at the time while José was living in Britain.
—
Virginia Chamlee, PEOPLE, 31 Dec. 2025
Osmium promotes singlet–triplet excitation, a type of low-energy electronic transition that allows absorption of longer-wavelength light.
—Sujita Sinha, Interesting Engineering, 26 Dec. 2025
Skyler Gisondo and Marcello Hernández will be playing Farkle and Fergus, Shrek and Princess Fiona’s sons and brothers/triplets to Felicia, voiced by Zendaya.
—Alejandra Gularte, Vulture, 27 Nov. 2025
The new film will see the return of Cameron Diaz and Mike Myers as Fiona and Shrek and adds Zendaya as one of the couple's triplets.
—Lori A Bashian, FOXNews.com, 22 Nov. 2025
See All Example Sentences for triplet
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Virginia Chamlee, PEOPLE, 31 Dec. 2025
Osmium promotes singlet–triplet excitation, a type of low-energy electronic transition that allows absorption of longer-wavelength light.
—Sujita Sinha, Interesting Engineering, 26 Dec. 2025
Skyler Gisondo and Marcello Hernández will be playing Farkle and Fergus, Shrek and Princess Fiona’s sons and brothers/triplets to Felicia, voiced by Zendaya.
—Alejandra Gularte, Vulture, 27 Nov. 2025
The new film will see the return of Cameron Diaz and Mike Myers as Fiona and Shrek and adds Zendaya as one of the couple's triplets.
—Lori A Bashian, FOXNews.com, 22 Nov. 2025
See All Example Sentences for triplet
Cite this Entry
“Triplet.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/triplet. Accessed 1 Jan. 2026.
Copy CitationKids Definition
triplet
noun
trip·let
ˈtrip-lət 
1
: a unit of three lines of verse
2
: a combination, set, or group of three
3
: one of three children or offspring born at one birth
4
: a group of three notes played in the time of two of the same value
Medical Definition
triplet
noun
trip·let
ˈtrip-lət
1
a
: 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
2
a
: 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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